A baseball player hits a ball toward the outfield. The height h of the ball in feet is modeled by h(t) = -16t2 + 22t + 3, where t is the time in seconds. In addition, the function d(t) = 85t models the horizontal distance d traveled by the ball. If no one catches the ball, how long will it stay in the air?(Round to the nearest tenth of a second and enter only the number.)

Question

anonymous · Answer

Okay, you just find the zeros of this function, and take the larger one. Same as before.
−(8c+1)(2c−3) and the larger zero is 1.5 seconds in (2c-3). Ignore the distance function. It has no bearing in this problem.

anonymous · Answer

okay, and then this question has to do with the first one "To the nearest tenth of a foot, what is the horizontal distance that the ball travels before it hits the ground? (Enter only the number.)" and I got 127.5, is that correct?

anonymous · Answer

Yes, you substitute in your time into the distance function and get 127.5. It is in proper decimal as well.

anonymous · Answer

ah ha, I'm getting it now...