please help I'm dying

because I need this to be answered
A rental car company offers two rental plans, Plan A and Plan B, for the same economy size car. For both plans, the total rental cost f(m) is a function of the number of miles m that the car is driven.
Plan A: f(m)=0.12m+75

Plan B: f(m)=0.35m

I. In complete sentences, translate each function into a verbal model describing the total cost of the rental in terms of the number of miles that the car is driven.

II. For each function, determine how the rate of change will affect the total cost of a car rental.

III. For a car rental that will include a maximum of 250 miles for the duration of the rental, which plan is the most cost effective?

Respuesta :

Plan A charges 12 cents a mile plus a flat 75 dollars to rent a car. Plan B charges 35 cents a mile with no flat fee.

Plan A is cheaper if you plan to use the car on longer trips as it has the smaller rate of change but because plan B has no flat fee it's wisest to use it for shorter trips.

If the maximum is 250 miles it's always cheaper to use plan B

Answer:

500 miles

Step-by-step explanation:

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