Select all tables that represent a proportional relationship.

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

Arestaurant needs to buy thirty-seven new plates. if each box has five plates in it, how many boxes will they need to buy?

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?