Question

Design An art class is making a mural for their school which has a triangle drawn in the middle. The

length of the bottom of the triangle is x. Another side is 4 more than four times the length of the
bottom of the triangle. The last side is 4 more than the bottom of the triangle. Write and simplify an
expression for the perimeter of the triangle.

Answer 1

• P = 6x + 8

Explanation:

The sides are:

• x, 4x + 4, x + 4

The perimeter is the sum of side lengths:

• P = x + 4x + 4 + x + 4 = 6x + 8