Verified answer

• Problem:

If the length of a rectangle in terms of x is 7x + 9, and its width is 3x +6, what is the perimeter of this rectangle?

• Solution:

Given the length and the width, we can get the perimeter of a rectangle. To find the perimeter, we can use the formula: Perimeter = 2 ( l + w ), in which P is the perimeter, l is the length while w is the width.

Notice that we perform the distribution process when multiplying a binomial by a monomial.

• Answer:

The perimeter of the rectangle is 20x + 30 units.