Solve the problem.
-Suppose that P(x) represents the percentage of income spent on food in year x and I(x) represents income in year x. Determine a function F that represents total food expenditures in year x.
A) $F ( x ) = ( P + I ) ( x )$
B) $F ( x ) = ( P \cdot I ) ( x )$
C) $F ( x ) = ( I - P ) ( x )$
D) $F ( x ) = \left( \frac { I } { P } \right) ( x )$

Question

Quizplus · Accepted Answer

The total food expenditures in year x, represented by $F(x)$, is calculated by multiplying the percentage of income spent on food, $P(x)$, by the income, $I(x)$. Therefore, $F(x) = (P \cdot I)(x)$.

Solve the Problem F(x)=(P+I)(x)F ( x ) = ( P + I ) ( x )F(x)=(P+I)(x)

Solve the Problem $F ( x ) = ( P + I ) ( x )$