Marginal Revenue: lawyer charges according to R = 120n+4000

angel716

New member
Joined
Apr 5, 2009
Messages
27
Question: A defense attorney charges her client $4000 plus $120 per hour. The formula R=120n+4000 gives her revenue in dollars for n an hours of work. What is hte revenure for 100hrs for work? what is her revenue for 101 hours of work? By how much did the one extra hour of work increase the revenue? ( the increase in revenue is called the marginal revenue for the 101st hr)

okay so I took the R=120n+4000
n represents the 100 so it would read 120(100)+4000
but see even though thats its point blank in my face I do not know where to go with this and was hoping that maybe someone can break this down in a different example because I want to take the 120 and times that by 100 because she charges 4000 for the service I dont think I should focus on the 4000 as much as the 120 dollars and hr which calculates 100 hrs.
 
Re: Marginal Revenue

angel716 said:
Question: A defense attorney charges her client $4000 plus $120 per hour. The formula R=120n+4000 gives her revenue in dollars for n an hours of work.

What is hte revenure for 100hrs for work?

what is her revenue for 101 hours of work?

By how much did the one extra hour of work increase the revenue? ( the increase in revenue is called the marginal revenue for the 101st hr)

okay so I took the R=120n+4000
n represents the 100 so it would read 120(100)+4000 = 16000 --- This is the answer for "...What is hte revenure for 100hrs for work? "

Now similarly find

what is her revenue for 101 hours of work?


then find - by subtracting

By how much did the one extra hour of work increase the revenue?


but see even though thats its point blank in my face I do not know where to go with this and was hoping that maybe someone can break this down in a different example because I want to take the 120 and times that by 100 because she charges 4000 for the service I dont think I should focus on the 4000 as much as the 120 dollars and hr which calculates 100 hrs.
 
Re: Marginal Revenue

16000 was my first answer however i added not subtracted the amount if that is what you are asking me i did

120(100)+4000=16,000 however there was that additional hour to make it to 101
so I pluged that in 120(101)+4000=16,120 because it was that additional hour right?
 
Re: Marginal Revenue

angel716 said:
16000 was my first answer however i added not subtracted the amount if that is what you are asking me i did

120(100)+4000=16,000 however there was that additional hour to make it to 101
so I pluged that in 120(101)+4000=16,120 because it was that additional hour right? ---- Correct

Now find how much more did shwe earn for that additional hour
 
Re: Marginal Revenue

angel716 said:
Question: A defense attorney charges her client $4000 plus $120 per hour. The formula R=120n+4000 gives her revenue in dollars for n an hours of work. What is hte revenure for 100hrs for work? what is her revenue for 101 hours of work? By how much did the one extra hour of work increase the revenue? ( the increase in revenue is called the marginal revenue for the 101st hr)
May I ask point blank: WHO made up this silly problem?
 
Top