Question

use the graph to solve the questions below.
estimating calories used
calories used per hour
standing
slow walking
power walking
swimming
running
biking
100 200 300 400 500 600 700 800
how many calories used for 3 hours of power walking?
800 calories
840 calories
900 calories
920 calories

Explanation:

Step1: Determine calories per hour

From the graph, power - walking uses 300 calories per hour.

Step2: Calculate calories for 3 hours

Multiply calories per hour by 3. So, $300\times3 = 900$ calories.

Answer:

900 calories