Question

It is estimated that in m months from now, the number of out-of-state cars on a ferry system will be given by the function:

F(m)=-3m^2+21m

A) What is the average rate of change for this function between 3 and 6 months from now? (Include as many decimal places as is possible.)

B) What are the appropriate units for the average rate of change?

Answer 1

f(6)=?
f(3)=?

Average rate of change:
\[\frac{f(6)cars-f(3)cars}{6months-3months}\] =cars/month