Question

Tara's car accelerated from 10 miles per hour to 70 miles per hour in 12 seconds.

What is the approximate rate of change in the miles per hour that Tara's car accelerated?
A) 5 miles per hour per second
B) 8 miles per hour per second
C) 18 miles per hour per second
D) 48 miles per hour per second

Answer 1

You would subtract 70-10 and get 60. Then do 60/12. That gives you 5 mphps

Answer 2

5 miles per hour is correct