- #1

IsoGD

## Homework Statement

Water is poured into a container that has a leak. The mass

*m*of the water is given as a function of time

*t*by

*m*= 6.00

*t*

^{0.8}- 2.75

*t*+ 22.00, with

*t*

*m*in grams, and

*t*in seconds.

(a) At what time is the water mass greatest? (s)

(b) What is that greatest mass? (g)

(c) In kilograms per minute, what is the rate of mass change at

*t*= 2.00 s? (kg/min)

(d) In kilograms per minute, what is the rate of mass change at

*t*= 5.00 s? (kg/min)

## Homework Equations

*m*= 6.00

*t*

^{0.8}- 2.75

*t*+ 22.00

## The Attempt at a Solution

I didn't really have any clue on how to start this problem at all, so I was just able to find that the greatest mass is ~33.1 grams from guessing and checking. After that, I tried to see if I could work out what the time was by plugging the mass back into the equation, but the answer I got (17.7 seconds) was showing as incorrect on Webassign. So I really just need to be explained how to even start this problem in the first place so that I can work from there.

*Edited superscripts in*

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