Determine a function A that represents total automobile insurance expenditures within year x.?

Suppose that P(x) represents the percentage of income spent on automobile insurance in year x and I(x) represents income in year x.
"> I don't resembling using I(x), so replace "I" with "f":

If your total income is f(x), and you spend p(x) percentage of that income on insurance, then you spend p(x)*f(x) amount per year, thus:

A(x)=p(x)*f(x)


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