If a rock is thrown upward from a height of 100 ft, with an initial velocity of 32ft/sec, solve for the time that it takes for it to hit the fround (when h=0)

Round your answer to 2 decimals

Well, by now you can surely solve a quadratic equation. The stated conditions mean that

h(t) = -16t^2 + 32t + 100

now just solve h(t) = 0