Help 7th grader :) plzzz :3

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

Solve for x -2.3(r - 1.2 ) = -9.66 enter you answer as decimal.

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1