## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

$15$ Calories burnt per minute of running
2 minutes of running burns 30 Calories. 4 minutes of running burns 60 Calories. To find the rate a runner burns Calories, divide the change in Calories burnt by the change in the time: average rate of Calories burned while running $=\dfrac{60-30}{4-2}=\dfrac{30}{2}=15$ Calories per minute.