SOLUTION: Please help me solve this word problem: A disc is thrown into the air and follows a path modeled by the function h(t)=7.8+22t-5t^2, where time, t, is in seconds and height h(t) is

Question 882144: Please help me solve this word problem: A disc is thrown into the air and follows a path modeled by the function h(t)=7.8+22t-5t^2, where time, t, is in seconds and height h(t) is in meters. Determine when the ball will land to the nearest hundredth.
Answer by josgarithmetic(39615) (Show Source): You can put this solution on YOUR website!
Disc? Ball?
In any case, you know to expect the maximum point in the exact middle of the two roots of the h(t). The initial height is 7.8 meters (Do you see why?). That is for t=0. The t that you are looking for is the greatest value of t.

-
, will give you the zeros of h.

9680=2^4*5*11^2

,

or
AMP Parsing Error of [highlight(12*sec)]: Invalid function ')': opening bracket expected at /home/ichudov/project_locations/algebra.com/templates/Algebra/Expression.pm line 70. . or ,this root not needed.

The maximum height happens when seconds.

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