Marie was in charge of 75 employees prior to the pandemic. She is currently charge of 60 employees. By what percentage did the number of employees
change? Is this a percent increase or decrease?

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?