Question

The perimeter of a rectangle is 16 inches. The equation that represents the perimeter of the rectangle is 2 l plus 2 w equals 16, where l represents the length of the rectangle and w represents the width of the rectangle. Which value is possible for the length of the rectangle?

7 in.
8 in.
9 in.
10 in.

Answer 1

Perimeter gives l + w = 8. Since width must be positive, l < 8. Of the choices only 7 in is less than 8 (giving w = 1 in). So 7 in.