Solve for x. large mathbf{frac{x + 2}{3} = -4} this isnt a multiple choice question im not good with questions like these

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles.

Enter the missing numbers in the boxes to complete the table of equivalent ratios.time (min) distance (km)? 36 9? 1512 ?

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b