We are asked to find the possible values of x which is the missing side length of the given quadrilateral. Let's take a look at the given figure.
We will first find the perimeter by adding the four sides of the given quadrilateral.
Perimeter = 6.4+4.9+4.1+x
We are told that the perimeter is less than or equal to 18.7 feet.
Perimeter≤18.7
By substituting the expression for the perimeter, we can form an inequality.
6.4+4.9+4.1+x≤ 18.7
Let's now solve this inequality by isolating x.
