Question

At how many miles would you payfor the same amount to rent a car from Enterprise and Avis.

Enterprise being: y=10m+50
Avis being: y=257

Answer 1

have them be equal:
10m+50=257
10m=207
m=20.7

so at 20.7miles the costs are the same for E and A. Under 20.7miles, E is cheaper. Conversely, A is cheaper over 20.7miles