Question

Steven entered high school at 5 feet, 2 inches tall (62 inches). By the end of his senior year—four years later—he was 6 feet tall (72 inches tall). What was the average rate of change per year over his high school career?

Answer 1

(72-62)/4

Answer 2

10 inches/4 years = 2.5 inches/year

Answer 3

that's 10/4 = 2.5/year

Answer 4

Thanks!