The function f(t)= -5t^2 + 20t + 60 models the approximate height of an object t seconds after it is launched. How many seconds does jt take the object to hit the ground?

How many days was the temperature above 90 degrees?

Solve 2x2 + 8 = 0 by graphing the related function. there are two solutions: . there are no real number solutions. there are two solutions: 2 and -2

One of every 20 customers reports poor customer service on your company’s customer satisfaction survey. you have just created a new process that should cut the number of poor customer service complaints in half. what percentage of customers would you expect to report poor service after this process is implemented? 1.) 5% 2.) 10% 3.) 2% 4.) 2.5%