A father and son are building a rectangular tree house. The width of the tree house must be at least six feet and the perimeter should be no more than 40 feet. Which of the dimensions below works with the requirements of the tree house?
A. width = 5 feet and length = 15 feet
B. width = 6 feet and length = 16 feet
C. width = 7 feet and length = 11 feet
D. width = 8 feet and length = 13 feet

Question

A father and son are building a rectangular tree house. The width of the tree house must be at least six feet and the perimeter should be no more than 40 feet. Which of the dimensions below works with the requirements of the tree house?
	A.	width = 5 feet and length = 15 feet
	B.	width = 6 feet and length = 16 feet
	C.	width = 7 feet and length = 11 feet
	D.	width = 8 feet and length = 13 feet

anonymous · Answer

$$x \ge6$$
so you can get rid of A
$$(6\times2)+(16\times2)>40$$
so get rid of B
$$(8\times2)+(13\times2)>40$$
So get rid of D

anonymous · Answer

x= width of tree house