Which following figures have a area of 64 square feet? Select three that apply

Quick translate "x is 12 units from 20" into an equation. what are the values of x being described? if you can answer any of my other questions that'd be great too

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.