Question

the length of a rectangular storage shed must be 4 meters more than the width, and the perimeter must be at least 120 meters. What is the range of values for the width?

Answer 1

l=w+4
P=2w+2l
P=2w+2(w+4)
P=2w+2w+8
P=4w+8
P>120, therefore 4w+8>120
4w>112
w>28
The width must be greater than 28 meters.

Answer 2

thank you. i have one more that is a long one.

Answer 3

To clarify, the width must be greater than *or equal to* 28 meters, since the perimeter must be greater than or equal to 120 meters.