Do Now 9/13/10 Take out HW from Wednesday. Take out HW from Wednesday. Text p , #2-32 evenText p , #2-32 even Copy HW in your planner. Copy HW in your planner. Text p , #4-36 evenText p , #4-36 even QUIZ sections 1.1 – 1.3 WednesdayQUIZ sections 1.1 – 1.3 Wednesday Chapter 1 Test FridayChapter 1 Test Friday In your journal answer the following question. Suppose “#” is a special operation that “a # b” means 4a – 2b. What is 3 # 2? What is 2 # 3? Is # a commutative operation? In your journal answer the following question. Suppose “#” is a special operation that “a # b” means 4a – 2b. What is 3 # 2? What is 2 # 3? Is # a commutative operation?

Homework Text p , #2-32 even 2). Substitute 3 for x. Then multiply 3 times 3; add 9 +1; square 10; multiply 2 times 100. The result is ). Substitute 3 for x. Then multiply 3 times 3; add 9 +1; square 10; multiply 2 times 100. The result is ). 4 4). 4 6). 47 6). 47 8). 1 1/2 8). 1 1/2 10) ) ). 1 16). 0 18). 32

20) was added before dividing 14 by 7;(1+13) ÷ 7 +7 = 14 ÷ = 2+ 7 = 9 22) ) ) ). 3 1/22 30). ¼ 32). ( ) ÷ (11 – 9 + 3) Homework Text p , #2-32 even

Objective SWBAT translate verbal phrases into expressions. SWBAT translate verbal phrases into expressions.

Section 1.3, Write Expressions Section 1.3, Write Expressions EXPRESSION – EXPRESSION – a collection of numbers and or variables that can be linked by +, -, x, and ÷ y² – 8 13 * x 9 5 ÷ x

Writing Expressions Operation Verbal Phrase Expression Addition Subtraction Multiplication Division Sum, plus, total, more than, increased by 5 + n k + 12 Difference, less than, minus, decreased by 12 – p x – 12 Product, times, of, multiplied by 3 x 5 3d (n)(w) p ∙ k Quotient, divided by, divided into k/7 14 ÷ r

Translate verbal phrases into expressions Verbal Phrase Expression a. 4 less than the quantity 6 times a number n b. 3 times the sum of 7 and a number y c. The difference of 22 and the square of a number m 6n – 4 3(7 + y) 22 – m 2 The quotient when the quantity 10 plus a number x is divided by 2d x 2

RATE – RATE – a fraction that compares two quantities of different measurement. 45miles hour hour 5 meters second second 8 dollars hour hour UNIT RATE A UNIT RATE is a rate that has a denominator of 1. Examples of rates: speed, distance, wages

EXAMPLE 4 Finding a Unit Rate A car travels 110 miles in 2 hours. Find the unit rate. 110 miles 2 hours = 1 hour 55 miles 2 hours miles 2 =

STEP 1 Calculate the unit rate = = $.25 per minute Write a verbal model and then an expression. Let m be the number of extra minutes. STEP m Evaluate the expression when m = (22) = 35.5 STEP 3 Total Bill: $35.50 Your basic monthly charge for cell phone service is $30, which includes 300 free minutes. You pay a fee for each extra minute you use. One month you paid $3.75 for 15 extra minutes. Find your total bill if you use 22 extra minutes.

Homework Text p , #4-36 even Text p , #4-36 even NJASK7 Prep