Determine the Rate of Change and Initial Value

What is the initial value for this relation?

• 0 m

• 0 s

• 6 m

• 6 s

A climber is on a hike. After 2 hours he is at an altitude of 400 feet. After 6 hours, he is at an altitude of 700 feet. What is the rate of change?

• 75 feet per hour

• 75 hours per feet

• -75 feet per hour

• -75 hours per feet

A scuba diver is 30 feet below the surface of the water 10 seconds after he entered the water and 100 feet below the surface after 40 seconds. What is the scuba divers rate of change?

• -2.33 feet per second

• -0.43 feet per second

• 2.33 feet per second

• 0.43 feet per second

What is the rate of change for this relation?

• 1.5 cm per week

• 0.67 cm per week

• -1.5 cm per week

• -0.67 cm per week

Find the rate of change. Type in the number only.

What is the initial value? Read the answer choices carefully.

• 0 dollars

• 1 dollar

• 8 dollars

• 8 weeks

During the summer, Briana runs an ice cream shop. Her biggest seller is waffle ice cream cones. She charges $1.85 for a waffle cone, and $0.60 for each scoop of ice cream. What is the rate of change?

• $2.45

• $0.60

• $60

• $1.85

Chicken Express sell boxes of chicken with varying numbers of pieces. They charge 40 cents for each piece of chicken, plus a fixed charge of 55 cents for the box. What is the rate of change?

• $0.40

• $40

• $0.55

• $55

Bob has $150 in his savings account and saves $40 per month. What is the rate of change?

• $150

• $40 per month

• $40 per day

The rate of change is another word for slope.

True or false?