Michelle bought a new calculator for math class. It cost $17.25. The tax rate is 5.50%. Calculate the tax and the total cost for the
calculator,

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?

Aprojectile is thrown upward so that its distance above the ground after t seconds is given by the function h(t) = -16t2 + 704t. after how many seconds does the projectile take to reach its maximum height?