Lesson 16/17 Practice

A holiday meal costs $12.50 a person plus a delivery fee of $30. Which equation represents the amount a holiday meal costs, including delivery, for x people?

• y = 12.5x + 30

• y = 12.5 + 30

• y = 12.5 + 30x

• y = 12.5x + 30x

Speedy Boat Rental charges a $15 deposit fee plus $2 for each hour of use to rent a paddle boat. Write an equation to represent this situation.

• y = 2x + 15

• x = 15y + 2

• y = 15x+ 2

The Roaming Cell Phone Company charges $15.00 per month plus $0.20 per minute of airtime usage.  If Juanita uses x minutes of airtime, what is an equation that can be used to determine her monthly cell phone bill (C)?

• C = 15 + 0.20x
• C =15 (0.20x)
• C = 15 + x + 0.20
• C = 0.20 + 15x

What is the rate of change in the table?

• 3/2
• 2/3
• -3/2
• -2/3

Find the rate.

• No Slope
• 3
• 1/3
• Zero

Find the slope:

• 2
• -2
• 1/2
• -1/2

What is the slope of the equation y = -3x + 8

• 8

• -3

• No Slope

• Undefined

Which equation has the greatest rate of change?

• y = 10x - 5

• y = -3x + 8

• y = -26x

• y = 2x + 14

Which company charges more per hour?

• Water's Edge Rafts

• Ryan's Rafts

• Neither. They have the same rate of change.

• There is not enough information to answer this question.

Function A is represented by the equation y = 4x - 2. Function B is represented by the table.

Which of these functions has the greater rate of change?

• Function A. It's rate of change is -2.

• Function A. It's rate of change is 4.

• Function B. It's rate of change is 2.

• Function B. It's rate of change is 6.