Work these exercise. (See Example.)A machine is now worth $120,000 and will be depreciated...

Work these exercise. (See Example.)

A machine is now worth $120,000 and will be depreciated linearly over an 8-year period, at which time it will be worth $25,000 as scrap.

(a) Find the rule of the depreciation function f.

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(b) What is the domain of f?

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(c) What will the machine be worth in 6 years?

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).