Lesson 6: The Quadratic Formula Answers

The height h (in feet) of an object t seconds after it is dropped can be modeled by the quadratic equation h = -16t2 + h0, where h0 is the initial height of the object. Suppose a small rock dislodges from a ledge that is 255 ft above a canyon floor. Solve the equation h = -16t2 + 255 for t, using the quadratic formula to determine the time it takes the rock to reach the canyon floor.

10x + y = -x2 + 2 noonetwo real solution(s)

4y - 7 = 5x2 - x + 2 + 3ynoonetwo real solution(s)

y = (-x + 4)2noonetwo real solution(s)