Question

Can anyone help with this question? The quantity, q of skateboards sold, at a unit price of p dollars, is given by f(p)=q. Suppose that f(140)=15,000 and f'(140)=-100. Determine how fast the revenue from the sale of skateboards is changing at a price of $140. Show clearly how arrived at your conclusion.

Answer 1

If unit price is $140, then the quantity sold is 15,000 units
q - 15,000 = -100 ( p - 140)
-> q - 15,000 = - 100p + 14,000
=> q = -100p + 29,000

Answer 2

It takes me forever to think what to write for conclusion.

Answer 3

So the answer is the equation? This question totally had me lost.

Answer 4

Yes, I'm thinking about conclusion to explain it to you!

Answer 5

Okay, thanks. Take your time.

Answer 6

At the unit price of $140, the revenue is decreasing 100 skate boards periodically from 29,000 to 15,000 units.
(It's my best guess, since I have no idea about economic term. You probably need to ask teacher explain about the y-intercept value 29,000 )

Answer 7

Okay, Thank you!

Answer 8

Does it make sense as the lecture?

Answer 9

Yes it does.

Answer 10

I feel sort of happy! What course is it?

Answer 11

This is for Applied Calc/Linear Algebra. The hardest class I have ever taken and the teacher will not offer any help. If you ask he says good luck.

Answer 12

Wow, should you post the problem here 1 chapter overhead, hopefully somebody will figure it out!

Answer 13

Could you possible take a look at one other problem I have to submit tonight that I can't figure out and nobody else on here has attempted it. I have it in a word document.

Answer 14

Well, I may try!

Answer 15

Could you post it in pdf form?

Answer 16

Question number 3

Answer 17

It's tough! How many hours more we have?

Answer 18

its due at midnight

Answer 19

I'm not sure if I can but you can check back at last minute!

Answer 20

What time do you have?

Answer 21

8:56pm

Answer 22

Ok, be back around 10:30

Answer 23

Okay, Thank you sooo much!

Answer 24

B(t) = 56.8 e^8 * (-7.5)

Answer 25

It doesn't make any sense! In case if you need my help, you need to scan me your lecture notes ahead of time so I can figure out the concepts!

Answer 26

Okay, thanks for trying. We actually don't get any lecture notes. We do our assignments in my math lab and have an ebook to look at. And then our teacher makes us do these pdf assignments every once in a while.

Answer 27

So you have access to the ebook?

Answer 28

Because lot of university students get lost ask for help, then that what I did.

Answer 29

We have to log into our math lab where we submit assignments to get to the ebook but yes. I looked through the book to see if there where any questions similar to this and I didn't see any. And I asked another student who is taking the course if they got this question and they didn't.

Answer 30

I don't think it's easy to ask your friends for help except you have some special relationship, because the environment is competitive!

Answer 31

Even if they know, they won't help!

Answer 32

Well thanks again for trying.

Answer 33

Think about planning earlier next time, though!

Answer 34

Sorry and Good luck!