Question 1020512: I am having trouble figuring out how to connect what I know about quadratic equations to answering word problem
For example:
An astronaut throws a ball to a fellow astronaut on the moon. The height of the ball, h, at time, t, is given by the equation (h(t) = -2.7t^2+35t+7), where h is in feet and t is the number of seconds after the ball is thrown.
a) how high does the ball get
b) when does it reach that height?
c) how high is the ball after 4 seconds?
d) when will the ball hit the ground?
e) when does the ball reach 100 ft?
Answer by josgarithmetic(39616)   (Show Source):
You can put this solution on YOUR website! a) how high does the ball get
What is the largest or biggest h(t) and for what value of t?
b) when does it reach that height?
For what value of t is h(t) the largest?
c) how high is the ball after 4 seconds?
What is h(4)?
d) when will the ball hit the ground?
One of the roots or zeros of h.
e) when does the ball reach 100 ft?
Let h(t)=100 and solve for t.
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