Respuesta :

p(x) = (r-c)(x)
p(x) = r(x) - c(x)
p(x) = [ r(x) ] - [ c(x) ]
p(x) = [18x] - [5x+20]
p(x) = 18x - 5x - 20
p(x) = 13x - 20

Answer is choice A

Hello!

I believe the answer is A) p(x) = 13x -20.

I hope it helps!