PLEASE HELP !!!!!!!!!

1) Quadrilateral ABCD is a square. If AB=5+3x and BC= 20-2x , what is the length of / CD

A3

B50

C15

D14

2) Cindy has 500 feet of fencing around a rectangular pen that has a width of a feet and length of b feet. This is represented by the equation 2 (a+b) =500 Cindy plans to change the width of the pen and wants to solve for b to see how the new length will be affected. Which equation shows a correct solution for b in terms of a?

Ab=a- 500/2

Bb= 500/2 -a

Cb= 500-a/2

Db=a-500/2

please number answers so i know which answer is for each question.


Thanks for your help :)