5. A family bought a used car that had been
driven 12,000 miles.
The table shows the total distance, in
miles, that the car has traveled each year
since the purchase.
years since
purchased
0
1
2
3
total miles
traveled
12,000
15,140
18,525
21,750
a. On average, how many miles does the family drive each year? Explain or show
your reasoning.
b. Write an equation that could define function M, which gives the total miles
traveled, r years since the purchase. Use function notation.
c. Write an equation that is the inverse of function M. Explain what information it
tells us about the situation.
d. If the family's driving trend continues, when will the car have traveled 50,000
miles? Explain or show your reasoning.