## blackstreet23 one year ago Fluid flows into a tank at a rate of (180+3t) liters/min A) Determine the amount of fluid that flows into a tank during the first 20 minutes B) Determine the average rate of flow over the first 20 minutes

1. IrishBoy123

are you learning calculus?

2. blackstreet23

Calculus 2

3. blackstreet23

@freckles

4. IrishBoy123

so write a differential equation!

5. blackstreet23

Don't know which

6. anonymous

humm... i have a question: don't you just plug in the 20 into the equation for the first question?

7. IrishBoy123

$\frac{dV}{dt}$ ring any bells?

8. anonymous

humm... i thought u plug in the 20 for the t for the first question and divide 20 by the answer for the first question and isnt that answer the answer for the second question?

9. blackstreet23

find the derivative of the equation?

10. blackstreet23

f(prime of 20) ?

11. blackstreet23

ohh related rates

12. IrishBoy123

"Fluid flows into a tank at a rate of"... i gave you the clue: $$\large \frac{dV}{dt} = ???????????$$

13. IrishBoy123

"liters/min"

14. blackstreet23

volume right

15. IrishBoy123

think so go for it

16. blackstreet23

So i would undo the related rate by integration?

17. blackstreet23

I want just the litters how would i get that?

18. IrishBoy123

"undo the related rate" do that!

19. IrishBoy123

but write out the related rate first, if you can