1. CA Review 3b (Part 2)

2. The table shows Mike’s age and Tom’s age over 3 consecutive years.
Mike’s Age x
(years)
Tom’s Age y 2 5 3 6 4 7 8
Which expression best represents Tom’s age in terms of Mike’s age? 3y 3x
y+3
x + 3

3. League Income (dollars)
Coach Brown prepared the table below to show how the income earned by a baseball league changes depending on the number of teams in the league.
Number of Teams
League Income (dollars) 2
1,540 5
3,850 8
6,160 10
7,700 t I
Which expression could be used to find l, the income the baseball league would earn if it had s teams?
1,540t
t + 6,160
770t
t + 7,700

4. Which situation is best represented by the equation x + 4.50 = 6.50
David found a shirt with a sale price of $ The discount was What is x, the original price of the shirt.
Andy paid $2.50 for a wallet. He has $4.75 left. What is x, the amount of money Andy started with?
Susie spent a total of 6.50 at the Sweets and Treats store. She spent 4.50 on candy and bought ice cream too. What is x, the price of the ice cream?
Amy did her English homework in 4.50 minutes. George did his in 7.20 minutes. The goal was to finish in 10 minutes. What is x, the difference of Amy’s time and the goal?

5. Which graph represents the cost of $4 dollars for each movie ticket?

6. Hours Spent on Swim Practice
The number of hours spent swimming and racing scores are related. Does the racing score represent the independent or dependent quantity?
Hours Spent on Swim Practice
Racing Scores 4
5.5 min 5
5 min 6
4.5 min 7
4 min 8
3.5 min
The racing score is the dependent quantity because the hours spent practicing depends on the race score.
The racing score is the dependent quantity, because the racing score depends on the amount of time spent practicing.
The racing score is the independent quantity, because the hours spent practicing depends on the racing score.
The racing score is the independent quantity, because the racing score depends on the amount of time practicing.

7. Identify the independent variable in this relationship.
Car Rental Cost
Cost (dollars)
Number of cars rented
The cost of each car rental
The number of cars rented
The cost of renting a car
The most rented car

8. Suppose each side of the square has a length x
Suppose each side of the square has a length x . Let y be the perimeter of the square. Use the table to relate the independent variable x to the dependent variable y. X 4 5 6 Y 16 20 24
X² = y
4x =Y
4y = x
y-4=x

9. Based on table below, if the input is k, and the output is m, which equation correctly calculates the output.
Input(k)
Output(m) 3 5 6 10 9 15 12 20
k + 20 = m
(5k-3) ÷ 3 = m
5k = m 3
D k + 2 =m