How do i do a and b? tell me step by step! : ) random answers will be moderated!

Formula

P = 2L + 2W

Givens

P = 106

L = 29

W =

Solve

106 = 2* 19 + 2(W)        

106 = 58 + 2W            Subtract 58

106 - 58 = 2W

48 = 2*W                    Divide by 2

48/2  = W

W = 24  <<<< Answer

y=−9/2x+10

step-by-step explanation:

let's solve for y.

0−9x−2y=−20

step 1: add 9x to both sides.

−9x−2y+9x=−20+9x

−2y=9x−20

step 2: divide both sides by -2.

−2y

−2

=

9x−20

−2

y=

−9

2

x+10