Answer:
10.4 miles
Explanation:
We can model the Cost of Lupita's trip using the formula
C(m) = 3.20m + 6.75, where C is the cost in dollars and m is the number of miles she travels. We can allow C(m) to equal 40.03 and we will need to solve for m:
40.03 = 3.20m + 6.75
33.28 = 3.20m
m = 10.4