Question 1185348
Please help me answer this word problem!!

Use function notation to rewrite all of the following phrases below.

A ball is thrown straight up with a certain speed, then its height above the ground (measured in meters) 
after t seconds is given by the following equation:

h(t)=-4.9t^2+25t

1. the height of the ball t seconds after being thrown
2. the height of the ball between 1 and 2 seconds
3. the height of the ball between 1.5 and 2.5 seconds
4. the change per second in the height of the ball between a and b seconds
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<pre>
1. the height of the ball t seconds after being thrown:  h(t).


2. the height of the ball between 1 and 2 seconds:       h(1) <= h <= h(2).


3. the height of the ball between 1.5 and 2.5 seconds:  h(1.5) <= h <= h(2.5).


4. the change per second in the height of the ball between a and b seconds:  {{{(h(b) - h(a))/(b-a)}}}.
</pre>


I answered all your questions.



Happy learning (!)