Work these exercise. (See Example.)A computer that cost $1250 new is expected to depreciat...

Work these exercise. (See Example.)

A computer that cost $1250 new is expected to depreciate linearly at a rate of $250 per year.

(a) Find the depreciation function f .

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(b) Explain why the domain of f is [0, 5].

Example

According to the Kelley Blue Book, a Ford Mustang two-door convertible that is worth $14,776 today will be worth $10,600 in two years (if it is in excellent condition with average mileage).