Two competing airlines create a new marketing plan, charging passengers a fixed amount and then a rate per mile flown. Cheapo Air: $39.95 plus $0.25 a mile

Two competing airlines create a new marketing plan, charging passengers a fixed amount and then a rate per mile flown.

Cheapo Air: $39.95 plus $0.25 a mile

Discount Airways: $139.95 plus $0.15 a mile

A one-way flight from Seattle to St. Louis is 2,086 miles.

Part A: If C is the cost of the flight and M is the number of miles flown one way, what is the equation for the cheapest option?

Part B: How much money will you save with the cheaper option?