Pre Calc
posted by Anonymous .
7. The Sandusky Little League uses a baseball throwing machine to help train 10year old players to catch high popups. It throws the baseball straight up with an initial velocity of 48 ft/sec from a height of 3.5 ft.
a. Find an equation that models the height of the ball t seconds after it is thrown.
b. What is the maximum height the baseball will reach? How many seconds will it take to reach that height?
8. Find the zeros of the function algebraically. f(x) = x2 + 2x – 8
9. Find the zeros of the function algebraically. f(x) = x2 + 2x + 8
10. Find the zeros of the function algebraically. f(x) = 2x2 – 10x + 3

HELP!

16x^2 + 48x + 3.5

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How do you get the initial equation?