Question

The grassy area of a playground has a side length of x and a side of width of x + 3 what is the area of the playground?

A. A(x)=x^2+3x
B. A(x)=x^2+x+3
C. A(x)=2x+3
D. A(x)=x^2+3​

Answer 1

A

Explanation:

Area = length × width

Area = x × (x + 3)

A(x) = x²+ 3x

Answer 2

A

Explanation:

We assume this playground is a rectangle. The area of a rectangle is of the form: A = lw, where l is the length and w is the width.

Here, the length is l = x and the width is w = x + 3. So, plug these in:

A = lw

A = x(x + 3)

Expand this out:

A = x² + 3x

The answer is thus A.