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

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) $F ( x ) = \left( \frac { I } { P } \right) ( x )$

Quizplus · Accepted Answer

Total food expenditures in year x can be represented by the product of the percentage of income spent on food and the income in that year, hence $F(x) = (P \cdot I)(x)$.

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

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