SOLUTION: find tehh break-even point for the firm whose cost function C and revenue function R are given C(x)=15x+12,000; R(x)=21x

Question 123028This question is from textbook Tan 8 finite mathematics
: find tehh break-even point for the firm whose cost function C and revenue function R are given
C(x)=15x+12,000; R(x)=21x This question is from textbook Tan 8 finite mathematics

Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
find the break-even point for the firm whose cost function C and revenue function R are given
C(x)=15x+12,000; R(x)=21x
:
Break even occurs when Revenue = Cost
R(x) = C(x)
so we have:
21x = 15x + 12000
:
21x - 15x = 12000; subtract 15x from both sides
:
6x = 12000
x = ; divide both sides by 6
x = 2000
:
:
We can prove that; substitute 2000 for x in:
21x = 15x + 12000
21(2000) = 15(2000) + 12000
42000 = 30000 + 12000; Revenue = cost
:
How about this? Do you understand this now?
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