Mai bought seven boxes. A week later half of all her boxes were destroyed in a flood. There are now only 22 boxes left. With how many did she start?

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

Ernest is purchasing a $175,000 home with a 30-year mortgage. he will make a $15,000 down payment. use the table below to find his monthly pmi payment.

For the equations below which statement is true ? -2x=14 6x=-42