Posted by **Rachel** on Friday, May 21, 2010 at 1:36pm.

How do you solve this math problem?

h= -8t^2+40t

then it says:

when t=0 and when t= 5

there are 2 questions that i have to answer:

1.) find the value of h

2.) graph this equation

- i dont know if i did the problem right but when i answered #1 i got h=0,

- and when i answered #2 the 8 and y coordinates that i was supossed to point were too high, like (1,32), (2,48,), (3, 48), etc. but our graph only goes up to 15-20, so either i did it wrong, or I need to know how to change the interval values on the a ti-84 graphing calculator

~ so just show me how to solve each problem, and if you have to change the intervals tell me what buttons to press! thanks so much!

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