Evidence Rate of Change

The equation c = 0.20t + 3.50 shows the relationship between the charge c in dollars for renting a kayak for t minutes.  What is the meaning of the slope of the equation?

• For $1.00, you can rent a kayak for 20 minutes.

• It costs $0.20 per minute to rent the kayak.

• You have to pay $0.20 up front before using the kayak at all.

• Every .2 minutes, you have to pay $1.00.

Find the rate of change

• 1

• 2

• 11

• Not a constant slope/Non-Linear

What is the rate of change of the average height in feet of the trees with respect to the number of years since the trees were planted?

• 3 ft/yr

• 7 ft/yr

• 10 ft/yr

• 14 ft/yr

What is the rate of change of y with respect to x?

• -1/2

• -5/2

• 2/1

• -2/1

What is the rate of change of y with respect to x?

What is the rate of change for the following graph?

• 80

• 20

• 40

• 160

What was Brian's rate of change?

• 3/2

• 1.5

• 60

• 30

What is the rate of change?

• The tree grows 3 inches every 2 months

• The tree grows 2 inches every 3 months

• The tree grows 3 inches every month

• The tree grows 2 inches every month

The table below shows the snowfall in a north-eastern city in inches for the first week in January.

Find the average rate of change in the number of inches of snowfall from January 8 to January 11.

• 1.5 in.

• 2 in.

• 3 in.

• 0.67 in.

What is the constant rate of change between the quantities in the table?

• $1 per hour

• $40 per hour

• $5 per hour

• $10 per hour