MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation Quick review of some basic facts about percent.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT means “per hundred” so… Quick review of some basic facts about percent.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT means “per hundred” so… Quick review of some basic facts about percent.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT means “per hundred” so… Quick review of some basic facts about percent.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT means “per hundred” so… Quick review of some basic facts about percent.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT means “per hundred” so… Quick review of some basic facts about percent.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT means “per hundred” so… Quick review of some basic facts about percent.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT means “per hundred” so… Quick review of some basic facts about percent.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT means “per hundred” so… Quick review of some basic facts about percent.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT means “per hundred” so… Quick review of some basic facts about percent.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT means “per hundred” so… Quick review of some basic facts about percent. To change a percent to a decimal, drop the percent sign and move the decimal 2 places to the left.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT means “per hundred” so… Quick review of some basic facts about percent. To change a percent to a decimal, drop the percent sign and move the decimal 2 places to the left.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT means “per hundred” so… Quick review of some basic facts about percent. To change a percent to a decimal, drop the percent sign and move the decimal 2 places to the left. To change a decimal to a percent, move the decimal 2 places to the right and add the percent sign.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT means “per hundred” so… Quick review of some basic facts about percent. To change a percent to a decimal, drop the percent sign and move the decimal 2 places to the left. To change a decimal to a percent, move the decimal 2 places to the right and add the percent sign.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. What is 35% of 140?
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. What is 35% of 140? PERCENT X BASE = AMOUNT
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. What is 35% of 140? PERCENT X BASE = AMOUNT % written as a decimal
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. What is 35% of 140? PERCENT X BASE = AMOUNT 0.35 X
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. What is 35% of 140? PERCENT X BASE = AMOUNT 0.35 X 140 What you are taking a percent of
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. What is 35% of 140? PERCENT X BASE = AMOUNT 0.35 X 140 = AMOUNT
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. What is 35% of 140? PERCENT X BASE = AMOUNT 0.35 X 140 = AMOUNT 49 = AMOUNT
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. What is 35% of 140? PERCENT X BASE = AMOUNT 0.35 X 140 = AMOUNT 49 = AMOUNT So, 35% of 140 is 49.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. 63 is 18% of what number?
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. 63 is 18% of what number? PERCENT X BASE = AMOUNT
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. 63 is 18% of what number? PERCENT X BASE = AMOUNT % written as a decimal
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. 63 is 18% of what number? PERCENT X BASE = AMOUNT 0.18
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. 63 is 18% of what number? PERCENT X BASE = AMOUNT 0.18 X BASE = 63 We are looking for the ‘of’ number (the base) so 63 must be the AMOUNT.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. 63 is 18% of what number? PERCENT X BASE = AMOUNT 0.18 X BASE = 63
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. 63 is 18% of what number? PERCENT X BASE = AMOUNT 0.18 X BASE = 63
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. 63 is 18% of what number? PERCENT X BASE = AMOUNT 0.18 X BASE = 63
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. 63 is 18% of what number? PERCENT X BASE = AMOUNT 0.18 X BASE = 63 So, 63 is 18% of 350.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. 288 is what percent of 640?
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. 288 is what percent of 640? PERCENT X BASE = AMOUNT
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. 288 is what percent of 640? PERCENT X BASE = AMOUNT PERCENT X 640 What you are taking a percent of
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. 288 is what percent of 640? PERCENT X BASE = AMOUNT PERCENT X 640 =
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. 288 is what percent of 640? PERCENT X BASE = AMOUNT PERCENT X 640 = 288 We are looking for the percent so 288 must be the AMOUNT.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. 288 is what percent of 640? PERCENT X BASE = AMOUNT PERCENT X 640 = 288
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. 288 is what percent of 640? PERCENT X BASE = AMOUNT PERCENT X 640 = 288
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. 288 is what percent of 640? PERCENT X BASE = AMOUNT PERCENT X 640 = 288
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation BASIC PERCENT EQUATION: PERCENT X BASE = AMOUNT Quick review of some basic facts about percent. 288 is what percent of 640? PERCENT X BASE = AMOUNT PERCENT X 640 = 288 So, 288 is 45% of 640.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Often, we are interested in the percent of change in a quantity.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Often, we are interested in the percent of change in a quantity. To find this, we first must calculate the AMOUNT of change.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Often, we are interested in the percent of change in a quantity. To find this, we first must calculate the AMOUNT of change. For example, if Jane’s salary went from $40,000 last year to $50,000 this year, then the AMOUNT of change is
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Often, we are interested in the percent of change in a quantity. For example, if Jane’s salary went from $40,000 last year to $50,000 this year, then the AMOUNT of change is $50,000 ― $40,000 = $10,000 To find this, we first must calculate the AMOUNT of change.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Often, we are interested in the percent of change in a quantity. To find this, we first must calculate the AMOUNT of change. To calculate the PERCENT change, just divide the AMOUNT of change by the original salary (the base). For example, if Jane’s salary went from $40,000 last year to $50,000 this year, then the AMOUNT of change is $50,000 ― $40,000 = $10,000
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Often, we are interested in the percent of change in a quantity. To find this, we first must calculate the AMOUNT of change. To calculate the PERCENT change, just divide the AMOUNT of change by the original salary (the base). For example, if Jane’s salary went from $40,000 last year to $50,000 this year, then the AMOUNT of change is $50,000 ― $40,000 = $10,000 So, Jane’s PERCENT INCREASE in salary is:
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Often, we are interested in the percent of change in a quantity. To find this, we first must calculate the AMOUNT of change. To calculate the PERCENT change, just divide the AMOUNT of change by the original salary (the base). For example, if Jane’s salary went from $40,000 last year to $50,000 this year, then the AMOUNT of change is $50,000 ― $40,000 = $10,000 So, Jane’s PERCENT INCREASE in salary is:
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Often, we are interested in the percent of change in a quantity. To find this, we first must calculate the AMOUNT of change. To calculate the PERCENT change, just divide the AMOUNT of change by the original salary (the base). For example, if Jane’s salary went from $40,000 last year to $50,000 this year, then the AMOUNT of change is $50,000 ― $40,000 = $10,000 So, Jane’s PERCENT INCREASE in salary is:
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Often, we are interested in the percent of change in a quantity. To find this, we first must calculate the AMOUNT of change. To calculate the PERCENT change, just divide the AMOUNT of change by the original salary (the base). For example, if Jane’s salary went from $40,000 last year to $50,000 this year, then the AMOUNT of change is $50,000 ― $40,000 = $10,000 So, Jane’s PERCENT INCREASE in salary is:
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Often, we are interested in the percent of change in a quantity. To find this, we first must calculate the AMOUNT of change. To calculate the PERCENT change, just divide the AMOUNT of change by the original salary (the base). For example, if Jane’s salary went from $40,000 last year to $50,000 this year, then the AMOUNT of change is $50,000 ― $40,000 = $10,000 So, Jane’s PERCENT INCREASE in salary is:
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Often, we are interested in the percent of change in a quantity. To find this, we first must calculate the AMOUNT of change. To calculate the PERCENT change, just divide the AMOUNT of change by the original salary (the base). For example, if Jane’s salary went from $45,000 last year to $50,000 this year, then the AMOUNT of change is $50,000 ― $40,000 = $10,000 So, Jane’s PERCENT INCREASE in salary is:
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Often, we are interested in the percent of change in a quantity. To find this, we first must calculate the AMOUNT of change. To calculate the PERCENT change, just divide the AMOUNT of change by the original salary (the base). For example, if Jane’s salary went from $45,000 last year to $50,000 this year, then the AMOUNT of change is $50,000 ― $40,000 = $10,000 So, Jane’s PERCENT INCREASE in salary is:
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Often, we are interested in the percent of change in a quantity.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Often, we are interested in the percent of change in a quantity. In the previous example, Jane’s percent change in salary was called a ‘percent increase’. That’s because the ‘New Amount’ was larger than the ‘Base Amount’ and the resulting calculation came out positive (25%).
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Often, we are interested in the percent of change in a quantity. In the previous example, Jane’s percent change in salary was called a ‘percent increase’. That’s because the ‘New Amount’ was larger than the ‘Base Amount’ and the resulting calculation came out positive (25%). Had the ‘Base Amount’ been larger (resulting in a negative quantity), the percent change could be called a ‘percent decrease’.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Al’s Auto is advertising that all cars are sold at a 5% markup over dealer cost. If Al’s dealer cost is $21339 and he is selling the car for $23295, is Al being honest?
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Al’s Auto is advertising that all cars are sold at a 5% markup over dealer cost. If Al’s dealer cost is $21339 and he is selling the car for $23295, is Al being honest?
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Al’s Auto is advertising that all cars are sold at a 5% markup over dealer cost. If Al’s dealer cost is $21339 and he is selling the car for $23295, is Al being honest?
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Al’s Auto is advertising that all cars are sold at a 5% markup over dealer cost. If Al’s dealer cost is $21339 and he is selling the car for $23295, is Al being honest? $21339
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Al’s Auto is advertising that all cars are sold at a 5% markup over dealer cost. If Al’s dealer cost is $21339 and he is selling the car for $23295, is Al being honest? $21339
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Al’s Auto is advertising that all cars are sold at a 5% markup over dealer cost. If Al’s dealer cost is $21339 and he is selling the car for $23295, is Al being honest? $21339
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Al’s Auto is advertising that all cars are sold at a 5% markup over dealer cost. If Al’s dealer cost is $21339 and he is selling the car for $23295, is Al being honest? $21339 $23295
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Al’s Auto is advertising that all cars are sold at a 5% markup over dealer cost. If Al’s dealer cost is $21339 and he is selling the car for $23295, is Al being honest? $21339 $23295
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Al’s Auto is advertising that all cars are sold at a 5% markup over dealer cost. If Al’s dealer cost is $21339 and he is selling the car for $23295, is Al being honest? $21339 $23295 ―
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Al’s Auto is advertising that all cars are sold at a 5% markup over dealer cost. If Al’s dealer cost is $21339 and he is selling the car for $23295, is Al being honest? $21339 $23295 $21339 $23295 ―
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Al’s Auto is advertising that all cars are sold at a 5% markup over dealer cost. If Al’s dealer cost is $21339 and he is selling the car for $23295, is Al being honest? $21339 $23295 $21339 $23295 ―
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Al’s Auto is advertising that all cars are sold at a 5% markup over dealer cost. If Al’s dealer cost is $21339 and he is selling the car for $23295, is Al being honest? $21339 $23295 $21339 $23295 ―
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation PERCENT CHANGE Al’s Auto is advertising that all cars are sold at a 5% markup over dealer cost. If Al’s dealer cost is $21339 and he is selling the car for $23295, is Al being honest? $21339 $23295 $21339 $23295 ― No. Al is NOT being honest!
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation TAXES June is unmarried with a taxable income of $41,458. Use the table below to find the amount of income tax she owes.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation TAXES June is unmarried with a taxable income of $41,458. Use the table below to find the amount of income tax she owes. Find the line in the table that includes June’s amount of taxable income.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation TAXES June is unmarried with a taxable income of $41,458. Use the table below to find the amount of income tax she owes. Find the line in the table that includes June’s amount of taxable income.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation TAXES June is unmarried with a taxable income of $41,458. Use the table below to find the amount of income tax she owes. So according to this table, the tax is $4, % of the amount over $30,650
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation TAXES June is unmarried with a taxable income of $41,458. Use the table below to find the amount of income tax she owes. So according to this table, the tax is $4, % of the amount over $30,650 The amount of taxable income over $30650 is $ $30650 = $10808.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation TAXES June is unmarried with a taxable income of $41,458. Use the table below to find the amount of income tax she owes. So according to this table, the tax is $4, % of the amount over $30,650 The amount of taxable income over $30650 is $ $30650 = $10808.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation TAXES June is unmarried with a taxable income of $41,458. Use the table below to find the amount of income tax she owes. So according to this table, the tax is $4, % of the amount over $30,650 The amount of taxable income over $30650 is $ $30650 = $10808.
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation TAXES June is unmarried with a taxable income of $41,458. Use the table below to find the amount of income tax she owes. So according to this table, the tax is $4, % of the amount over $30,650 The amount of taxable income over $30650 is $ $30650 = $ $10808
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation TAXES June is unmarried with a taxable income of $41,458. Use the table below to find the amount of income tax she owes. So according to this table, the tax is $4, % of the amount over $30,650 $10808 Tax = $ ($10808) = $ $2702 = $6922
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation TAXES June is unmarried with a taxable income of $41,458. Use the table below to find the amount of income tax she owes. So according to this table, the tax is $4, % of the amount over $30,650 $10808 Tax = $ ($10808) = $ $2702 = $6922
MATH 110 Sec 8-1 Lecture: Percents, Taxes and Inflation TAXES June is unmarried with a taxable income of $41,458. Use the table below to find the amount of income tax she owes. So according to this table, the tax is $4, % of the amount over $30,650 $10808 Tax = $ ($10808) = $ $2702 = $6922