A car traveling on a highway is 60 miles away from home after 1 hour, and is 300 miles away from home after 5 hours. What is the rate of change of the car’s distance over time?
A. mph
B. mph
C. 55 mph
D. 60 mph

Question

A car traveling on a highway is 60 miles away from home after 1 hour, and is 300 miles away from home after 5 hours. What is the rate of change of the car’s distance over time?
A.  mph 
B.  mph 
C. 55 mph 
D. 60 mph

anonymous · Answer

Rate of change of car distance over time = (Change of distance) / (Change of Time)
Change of distance = Final - Initial distance = 300 - 60 = 5
Change of Time = Final - Initial time = 5 - 1 = 4
Rate of change = 5 / 4