A copier company finds that copiers that are x years old require, on average, (e

Question

A copier company finds that copiers that are x years old require, on average, (equation) repairs annually for (equation). Find the year that requires the least repairs. A copier company finds that copiers that are x years old require, on average, f(x) = l.6x2-9.6x+20.3 repairs annually for Find the year that requires the least repairs. In the fifth year, the company requires the least repairs. In the fourth year, the company requires the least repairs. In the third year, the company requires the least repairs. In the first year, the company requires the least repairs. In the second year, the company requires the least repairs. Save Answer

Explanation / Answer

f'(x) = 3.2x - 9.6 = 0 => x = 3 Hence (3) is correct

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