How do you solve this A-4=

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

Find the value of x for which abcd must be a parallelogram -9-6x x-30

At oaknoll school, 90 out of 270 students on computers. what percent of students at oak knoll school do not own computers? round the nearest tenth of a percent.