Find a function that models the area A of a rectangle whose length is 9 ft more than twice its width x .
A) A(x) = x (9 + 2 x )
B) A(x) = x (9 x + 2)
C) A(x) = (9 + 2) x
D) A(x) = x (9 + x )
E) A(x) = 9 + 2 x

Question

Quizplus · Accepted Answer

The area of a rectangle is given by the formula A = length * width. If the length is 9 ft more than twice its width, then the length can be expressed as 9 + 2x, where x is the width. Therefore, the area A as a function of x is A(x) = x(9 + 2x).

Find a Function That Models the Area a of a Rectangle