Question

A rectangle's length is 4 feet more than its width. Write a quadratic function

that expresses the rectangle's area in terms of its width.
A. A(W) = w^2 – 4w
B. A(w)= w^2+4w
c. A(w)=w+4
D. A(w) = lw

Answer 1

B. A(w)=w∧2+4w

Explanation:

Let the width of the rectangle be w.

The length is 4 feet longer than the width= w+4

Area of a rectangle= length× width

A=L×W

=(w+4)×w

Opening the brackets gives the:

A=w²+4w

Therefore the expression for the area in terms of width is A(w)=w∧2+4w