Question

calories burned while walking
based on the graph, what is
the number of calories benjamin
will burn after walking at a
constant rate for 42 minutes?

Explanation:

Step1: Find the rate of calories burned per minute

We know that at \( x = 15 \) minutes, \( y = 60 \) calories. The rate \( r \) (calories per minute) is calculated as \( r=\frac{y}{x}=\frac{60}{15} = 4 \) calories per minute.

Step2: Calculate calories burned in 42 minutes

Using the rate \( r = 4 \) calories per minute, for \( x = 42 \) minutes, the calories burned \( y \) is \( y=r\times x=4\times42 = 168 \).

Answer:

168