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#1 2006-01-22 15:13:42

ineedhelp
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Homework help. I don't even know where to start.

Fantastic Flags, Inc., finds that the cost to make x flags is: C = 19x + 10, 135
while the revenue produced from them is R = 37x (C and R are in dollars).

What is the smallest whole number of flags, x, that must be sold for the company to show a profit (that is, the point at which revenue begins to exceed cost)?

#2 2006-01-22 15:18:48

irspow
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Re: Homework help. I don't even know where to start.

R - C = P  (Profit)

So you want to know when;

R-C>0

37x - 19x - 10135 > 0

18x - 10135 > 0

18x > 10135

x > 563.05555...

x = 564

#3 2006-01-22 16:09:04

MathsIsFun
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Re: Homework help. I don't even know where to start.

... and if they sell 564 this is the result:

Cost =  19x + 10,135 = 19 × 564 + 10,135 = 20,851
Revenue = 37x = 37 × 564 = 20,868

Profit = 20,868 - 20,851 = $17


"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  - Leon M. Lederman

#4 2006-01-22 20:45:32

ineedhelp
Novice

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Re: Homework help. I don't even know where to start.

Dang.  Looks so easy now.  Hard to see why I didn't see it myself.  Thanks for the help.

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