Is due in 15 minutes and i need a overall 80% have no clue what im doing and just need to turn it in! me out

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

Compare the cost of the bike trips from the two companies shown.for both the cost in a linear function of the number of days which statements is true

Florence price's brownies and more sells all types of cookies and pastries. on tuesdays, they markdown all brownies 75% to a sale of $1.50 a dozen. find the selling price and the markdown of a dozen brownies.