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November 22, 2014

November 22, 2014

Posted by **PLEASE HELP! PR** on Sunday, November 25, 2007 at 7:20pm.

Can somebody help me answer this and explain the steps to solve the problem?

Please help me this project is due tomorrow morning!!

- Calculus -
**Michael**, Sunday, November 25, 2007 at 7:27pmWe tried to help you with this several days ago. What did you not understand?

- Calculus -
**Ben**, Sunday, November 25, 2007 at 7:30pmMichael I have a question for you about the simplifying and taking a derivative

- Calculus -
- Calculus -
**PLEASE HELP!**, Sunday, November 25, 2007 at 7:29pmi am a different person and i still do not understand it

i get R'=3000-400X

but i dont understand wat to do with the 5000

- Calculus -
**Michael**, Sunday, November 25, 2007 at 7:34pmBen - I just answered you on your original post "Calc."

"PLEASE HELP!" - Your equation is not correct.

What is the basic formula for calculating revenue? Think about how a bookstore gets money if all its books are priced equally.

- Calculus -
**PLEASE HELP!**, Sunday, November 25, 2007 at 7:37pmR=p*q

- Calculus -
**PLEASE HELP!**, Sunday, November 25, 2007 at 7:44pmR'=p'(q)+p(q')

- Calculus -
**Michael**, Sunday, November 25, 2007 at 7:46pmAll you have to do is read the problem and identify p', q, p, and q'. Plug them in to get your change in rate of revenue (R').

- Calculus -
- Calculus -
**PLEASE HELP!**, Sunday, November 25, 2007 at 7:48pmok i got

p=20

p'=-1

q=1000

q'=200

and when i plugged them in i got r'=3000

is that right?

- Calculus -
**Michael**, Sunday, November 25, 2007 at 7:51pmYes, don't forget your dollar sign and labeling. (What does the $3000 mean?)

For the second part, plug in R' = 5000 and fill in all your other variables except q'. Then, solve for q'.

- Calculus -
- Calculus -
**PLEASE HELP!**, Sunday, November 25, 2007 at 7:54pmOk $3000 is the rate at that the revenue is rising.

Ok for the second answer i plugged it in and i got

30=q'

- Calculus -
**Michael**, Sunday, November 25, 2007 at 7:58pmThe company's revenue increases at a rate of $3000 per week. (You need the unit of time.)

Check your algebra for the second part.

- Calculus -
**PLEASE HELP!**, Sunday, November 25, 2007 at 8:00pmok i redid it

so q'=300?

- Calculus -
**Michael**, Sunday, November 25, 2007 at 8:03pmYour number is right, but don't forget your labeling.

- Calculus -
- Calculus -
**bobpursley**, Sunday, November 25, 2007 at 8:04pmGood work Michael, thanks.

- Calculus -
**PLEASE HELP!**, Sunday, November 25, 2007 at 8:06pmSo sales must increase at a rate of 300 books per week.

Thank U So much!

im gonna work on the second half of the problem now.

- Calculus -
**Michael**, Sunday, November 25, 2007 at 8:08pmThat's correct. Good job!

(Thanks, bobpursley.)

- Calculus -

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