A model rocket is projected vertically upward from the ground. Its distance s in feet above the ground after t seconds is given by the quadratic function

Work Exercises in order, to see how quadratic equations and inequalities are related.

At what times will the rocket be less than 624 ft above the ground? Let s(t)

Data from in Exercises 56

At what times will the rocket be more than 624 ft above the ground? Let s(t) > 624 and solve the quadratic inequality.

Exercises 57

At what times will the rocket be at ground level? Let s(t) = 0 and solve the quadratic equation.

s(t) = 16t + 256t. -