A store sells paint sets each paint set costs the same amount. During a sale, the store reduces the price of each paint set by $1.55. Emily spends $16.02 on 3 paint sets at the sale price. What was the price of 1 paint set before the sale?

An incoming airplane is x miles due north from the control tower at an airport. a second incoming airplane is y miles due east of the same control tower. the shortest distance between the two airplanes is z miles. which of the following functions would best model the situation above?