13. Majesta is building a rectangular sandbox for her younger sister. The length of the sandbox is 2 feet shorter than

three times the width of the sandbox. The perimeter of the sandbox is 40 feet. (Perimeter = 2 x width + 2 xlength)

Width = 5.5 feet

Length = 14.5 feet

Step-by-step explanation:

let the width = x feet

Length = 3x - 2 feet

Perimeter = 40 feet

2 * width + 2 * length = 40

2x + 2 * (3x-2) = 40

2x + 6x - 4 = 40

8x = 40 + 4 = 44

x = 44/8 = 5.5

Width = 5.5 feet

Length = 3 * 5.5 - 2 = 16.5 - 2 = 14.5 feet