Applications of Equations Unit 8 Quiz

On your cell phone bill, you are charged $0.25 for each text you send. Which variable is dependent?

• number of texts sent

• charge per text

• amount of your bill

You drive at a rate of r miles per hour. Which variable is independent?

• distance you drive

• number of hours you drive

• how much gas you use

The more people I have at my party, the more brownies I have to make. Which variable is independent?

• number of people at the party

• time spent making the brownies

• number of brownies I have to make

Ari is driving at an average speed of 50 miles per hour. Which equation represents the distance, d, in miles that Ari travels in h hours?

• d = 50h

• h = 50d

• d = 50 ÷ h

• h = 50 + d

A balloon rises at the rate of 12 feet, f, per second, s. Which equation represents this scenario?

• f = 12s

• f = 12 + s

• f = 12 - s

• f = s ÷ 12

Which table represents the scenario in the previous problem?

• 
• 
• 
• 

It takes Phillip 4.5 minutes to run a mile. Let m represent the number of minutes and d represent the number of miles ran. What is the missing value in the table?

• 3

• 13.5

• 13

• 17.5

• y = 2x

• y = x /2

• y = x - 4

• y = x + 4

Which scenario does the graph represent?

• Melissa earns $12 per hour

• The temperature increased by 2° per hour

• Zac ran a mile every 15 minutes

• Maria folds 10 napkin every minute