Please help? :') If you can not see the photo please tell me where it says ' ask lennvrgs about this question'. Thank you!

#12 find the value of x. #13 find the value of the variable.

What is the perimeter, p, of a rectangle that has a length of x + 8 and a width of y − 1? p = 2x + 2y + 18 p = 2x + 2y + 14 p = x + y − 9 p = x + y + 7

Marya wants to factor the polynomial 36x^3 -22x^2 - 144x. which term can she add to the polynomial that would not change its grestest common factor? check all that apply