* At their going-out-of-business sale, Bill's Bikes sold 35 bikes and had 56 left. Which equation could be used to find x, the number of bikes the store.

Slides:



Advertisements
Similar presentations
9-1: Relating Fractions, Decimals, and Percents
Advertisements

2-2 Solving Two-Step Equations Warm Up Solve each equation x = 112. x – 7 = x = 154. Find a common denominator Possible answer:
Warm Up Solve each equation. 1. 2x = 7x x = –3
Preview Warm Up California Standards Lesson Presentation.
Grade 8 Algebra1 Applications of Percents
Solving Two-Step Equations
Unit 2 Lesson 1 Warm Up Problem of the Day Lesson Presentation
How to solve using cross multiplication Created by: Brittany and Andrea.
Finding a percent of a number Textbook pages
EXAMPLE 1 Collecting Like Terms x + 2 = 3x x + 2 –x = 3x – x 2 = 2x 1 = x Original equation Subtract x from each side. Divide both sides by x2x.
We use ratios to make comparisons between two things. Ratios can be written 3 ways. 1. As a fraction 3 5 We are comparing rectangles to triangles. 2.
Warm Up Solve each equation. 1. 2x = 7x x = –3
COLLEGE ENTRY EXAM AVID: MATH ASSESSMENT PRACTICE.
Finding a percent of a number Textbook January 13 th 14 th, 15 th, 16th.
Holt Algebra Solving Equations by Adding or Subtracting Over 20 years, the population of a town decreased by 275 people to a population of 850. Write.
Solving Two-Step Equations You will solve equations by undoing operations using properties of equality. Essential Question: How do you solve two-step equations?
Warm Up Exercise Solve each equation, if possible. (1) w = -8w + w (2) 2(y – 6) = 9c + 2 (3) 18x – 5 = 3(6x – 2) (4) 8x – 3 = 7x + 2 (5) 3(x – 4)
2-Step Word Problems Multi-Step Word Problems Distance, Rate, and Time
Inverse Operations OperationInverse Operation MultiplicationDivision Multiplication Solving an equation that contains multiplication or division is similar.
Check it out! 2.1.1: Properties of Equality 1. Sydney subscribes to an online company that allows her to download electronic books. Her subscription costs.
Preview Warm Up California Standards Lesson Presentation.
Chapter 1 Review Advanced Algebra 1.
Warm Up Compare. Write, or =. 1. − < > > = Tell whether the inequality x < 5 is true or false for the following values of x. 5.
CONFIDENTIAL 1 Algebra1 Solving Inequalities with variables on Both Sides.
2-4 Solving Equations with Variables on Both Sides Warm Up Warm Up Lesson Quiz Lesson Quiz Lesson Presentation Lesson Presentation.
Solving Linear Inequalities Included in this presentation:  Solving Linear Inequalities  Solving Compound Inequalities  Linear Inequalities Applications.
Holt Algebra Solving Linear Equations and Inequalities Section 2.1 Solving Linear Equations and Inequalities.
ALGEBRA READINESS LESSON 5-6 Warm Up Lesson 5-6 Warm-Up.
Write an algebraic expression to represent 5 less than a number “n”.
Lesson 7. Literal Equations  I can identify literal equations.  I can rewrite and use literal equations Objectives.
Solving Multi-Step Inequalities Section 2.4. Warm Up Solve each equation. 1. 2x – 5 = –17 2. Solve each inequality and graph the solutions
Two Step equations. Understand The Problem EX: Chris’s landscaping bill is 380$. The plants cost 212$,and the labor cost 48$ per hour. Total bill = plants.
MTH 091 Sections 3.4 and 9.4 Linear Equations in One Variable and Problem Solving.
HW # 25- Holt p. 100 # all BRING AN EGG CARTON October 23, 2012: Week 7, Day One Go Giants! Warm Up: A straight fence is constructed from posts 6.
Section 3-4 Solve Multistep Inequalities Objectives: Solve multi-step inequalities with variables on one or both sides.
CONFIDENTIAL 1 Solving Two-Step and Multi-Step Equations.
Objective: Solve equations that involve more than one operation. 7-2 Solving Two-Step Equations.
Holt Algebra Solving Two-Step and Multi-Step Equations Solve equations in one variable that contain more than one operation. Objective.
S OLVING P ROPORTIONS Lesson 2-7. Warm Up: You are making beaded necklaces using a pattern in which 2 large red beads are followed by 3 small blue beads.
Multiplication and Division Properties. Multiplication Properties Commutative Property Associative Property Identity Property Zero Property Distributive.
+ Directly Proportional. + Directly proportional: as one amount increases, another amount increases at the same rate. Hence, the straight line when we.
CONFIDENTIAL 1 Grade 8 Pre-Algebra Solving Equations with Variables on Both Sides.
Holt Algebra Solving Inequalities with Variables on Both Sides Solve inequalities that contain variable terms on both sides. Objective.
Warm Up Simplify each expression. 1.10c + c 2. 5m + 2(2m – 7) 11c 9m – 14.
Warm Up 1. Write 0.03 as a percent. 2. Write as a decimal.
Review Game Show Fraction and %’s Finding Percents.
Section 3-4 Solve Multistep Inequalities SPI 23A: Solve multi-step inequalities in real-world situation Objectives: Solve multi-step inequalities with.
CONFIDENTIAL 1 Algebra1 Solving Two-Step and Multi-Step Inequalities.
I’m thinking of a number between 1 and 10…. Can you guess my number? play again.
6.3 Solving Systems of Linear Equations by the Addition Method
Solving Equations with Variables on Both Sides 1-5
Solving Multi-Step Equations
Objective 3.6 solve multi-step inequalities.
Homework # 10 – Word Problems
Solve 8x – x = –15. 8x – 21 – 5x = –15 8x – 5x – 21 = –15
Objective Solve equations in one variable that contain more than one operation.
Objective Solve equations in one variable that contain variable terms on both sides.
Objective Solve one-step equations in one variable by using multiplication or division.
EXAMPLE 4 Standardized Test Practice SOLUTION
Objective Solve equations in one variable that contain more than one operation.
Solving Equations by Adding and Subtracting Solving Equations
Objective Solve inequalities that contain variable terms on both sides.
Objective Solve equations in one variable that contain variable terms on both sides.
Subtract the same value on each side
Objective Solve one-step equations in one variable by using multiplication or division.
Objective Solve equations in one variable that contain more than one operation.
Objective Solve equations in one variable that contain more than one operation.
6.3 Using Elimination to Solve Systems
3(9z + 4) > 35z – 4 Original problem. Solve each inequality. Then graph the solution set on the number line. 3(9z + 4) > 35z – 4 Original problem.
2.6 Solving Equations Involving the Distributive property
Presentation transcript:

* At their going-out-of-business sale, Bill's Bikes sold 35 bikes and had 56 left. Which equation could be used to find x, the number of bikes the store had originally? Since this equation is not an answer choice, try rewriting the equation.

* Last month, Marcus borrowed $102 from his roommate. So far, he has paid him back $34. Which equation could be used to find x, the amount of money he still owes his roommate? Since this equation is not an answer choice, try rewriting the equation.

* Michelle made a bead necklace that was 16 inches long. The length of the necklace, in inches, is equal to 6 added to one-fifth the number of beads, b. Do Undo. X 1/ Div 1/5 Or mult. by 5/1 or mult. by 5

* Gavin is building a fence. He needs to put a post every 4 ½ feet. If a new segment of the fence has 14 new posts, using the last post from the previous section of fence as a starting point, how long is the new segment of fence?

* A painter charges $15.86 per hour, plus an additional amount for the supplies. If he made $ on a job where he worked 4 hours, how much did the supplies cost? The situation can be modeled by a linear equation of the form px + q = r where p is the hourly charge, x is the number of hours worked, q is the cost of the supplies, and r is the total earnings.

* Amy and Stephanie were playing a number game. Amy picked a number and told Stephanie that if she added 8 to the number and multiplied the sum by 4, it would equal 12. Which equation could Stephanie use to find the number, x? The situation can be modeled by a linear equation of the form p(x + q) = r, where p is what the sum is multiplied by, x is the number Amy picked, q is what was added to the number, and r is the ending value.

* Marty's class collected $44.00 in a school-wide penny collection contest. If Tommy's class added $8.00 to the amount they collected, x, and then multiplied the sum by 2, they would have the same amount of money as Marty's class. Use Distributive Property – 2 times x and 2 times 8 2x + 16 = 44 Solve the 2 step equation Do Undo. X Div x = 28

* Marty's class collected $44.00 in a school-wide penny collection contest. If Tommy's class added $8.00 to the amount they collected, x, and then multiplied the sum by 2, they would have the same amount of money as Marty's class. Divide both sides by 2 X = 14 Do Undo. X Div 2 /2 /2 2x = 28