Sunday
November 23, 2014

Homework Help: Maths

Posted by Lucy on Sunday, September 27, 2009 at 12:09pm.

As water drains out of a 2000L hot tub, the amount of water remaining in the tub can be modelled by the function V=0.00002(100-t)^4 , where t is the time, in minutes (t is greater than or equal to 0 and less than or equal to 100), and V is the volume of water, in litres, remaining in the tub at time t.
Determine the average rate of cahnge of the volume of water during
- the entire 100 min
- the first 30 min
- the last 30 min


I'm really confused as to what I actually have to do. I'd really appreciate some help.

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