Represent proportional relationships by equations.

#### Practice Exercises:

- Analyzing and identifying proportional relationships
- Rate problems 1
- Constructing and comparing proportional relationships
- Writing proportions

#### Homework:

AVD…Handout

1. Angie sells blue and yellow balloons. For every 10 blue balloons that are sold, she sells 7 yellow balloons.

If Angie sells a total of 680 balloons, how many will be blue?

2. CD is originally priced at $12.50. The sale price of the CD is $10.85.

What is the percent discount for the CD?

3. A proportion is shown.

12/30=*x/*50

What is the value of *x*?

4. A survey of 30 students found that 12 of them were members of a sports team.

How many students out of 800 would be on sports team?

5. A car dealership sold 88 cars this month. For every 4 red cars sold, 7 blue cars are sold.

How many of the cars sold this month were blue?

6. A store owner bought a jacket for $25. She sold it in her store for $55.

What is the percent of the markup on the jacket?

7. Haley read 22 pages in 11 minutes.

At this rate, how many minutes would it take Haley to read a 390 page book?

8. A baker can bake 6 dozen cookies in 20 minutes.

At this rate, how many minutes will it take to make 35 dozen cookies?

#### Interactive Practice:

- Glencoe Quiz
- Design you own AirPlane
- Solving proportions Game
- Lifting a Lion
- Proportion Calculator
- Solving Proportions