Please help me this is my last question

In trapezoid efgh, m∠gfe=63∘. identify m∠ghe. !

Ahigh definition tv cost $800 with a down payment of 2/5 of the cost. how much is left to pay, in dollars after the down payment has been made?

Suppose the equation ||x-a|-b|=2008 has 3 distinct real roots and a not =0. find the value of b.