A rectangle has a perimeter of 120 cm.

Question

Write the length of the rectangle as a function of its width.

Answer 1

2 L + 2 W = 120
so
L + W = 60
so
L = 60 - W

Answer 2

oh yea there's a second part of it. how do i find the range and domain.

I got

domain => x=R<60
range => y=R<60

Answer 3

Neither can be negative !

Answer 4

hmm

x=R; 0<x<60
y=R; 0<x<60

how's that

Answer 5

I like that better.

Answer 6

Perimeter is 120
The lenght is twice its width
What is the lenght