Answer:
Explanation:
First we are given
P= 2l+2w
L=3x-18
P= 22x-50
So lets plug in
22x-50=2( 3x-18)+2w Now we distribute the 2
22x-50= 6x-36+2w We want to solve for w, therefore we subtract 6x and add 36 to both sides
16x-14=2w Now we solve for w be dividing by 2 on both sides
8x-7=w Now that is the width.
To find area just do A=l*w
A= (3x-18) (8x-7) Multiply everything out
24x^2-21x-144x+126 combine like terms
24x^2-164x+126= A
Hope this helps