An outboard motor has an initial price of 1 440 A service contract costs 350 for the first year and increases 100 per year

Question

An outboard motor has an initial price of 1 440 A service contract costs 350 for the first year and increases 100 per year thereafter The total cost of the outboard motor in dollars after n years is given by C n 1 440 200n 40n where ne 1 Complete parts A through C A Ay 4 500 20 OB Ay 4 500 20 C 4 500 20 Q OD 4 500 20 C When is the average cost per year minimum This time is frequently referred to as the replacement time for this piece of equipment The average cost per year is minimum after years 17

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