The charge to rent a trailer is $20 for up to two hours +9 dollars per additional hour

A machine is now worth $150,300 and will be depreciated linearly over a 8-year period, at which time it will be worth $61,900 as scrap (a) Find the rule of depreciation function f. (b) What is the domain off? (c) What will the machine be worth in 4 years? (a) Find the rule of depreciation function f. f(x) = (Do not include the 5 symbol in your answer.) (b) What is the domain off? (Type your answer in interval notation.) (c) What will the machine be worth in 4 years? Enter your answer in each of the answer boxes