document.write( "Question 123028This question is from textbook Tan 8 finite mathematics
\n" ); document.write( ": find tehh break-even point for the firm whose cost function C and revenue function R are given
\n" ); document.write( "C(x)=15x+12,000; R(x)=21x \n" ); document.write( "
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find the break-even point for the firm whose cost function C and revenue function R are given
\n" ); document.write( "C(x)=15x+12,000; R(x)=21x
\n" ); document.write( ":
\n" ); document.write( "Break even occurs when Revenue = Cost
\n" ); document.write( "R(x) = C(x)
\n" ); document.write( "so we have:
\n" ); document.write( "21x = 15x + 12000
\n" ); document.write( ":
\n" ); document.write( "21x - 15x = 12000; subtract 15x from both sides
\n" ); document.write( ":
\n" ); document.write( "6x = 12000
\n" ); document.write( "x = \"12000%2F6\"; divide both sides by 6
\n" ); document.write( "x = 2000
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "We can prove that; substitute 2000 for x in:
\n" ); document.write( "21x = 15x + 12000
\n" ); document.write( "21(2000) = 15(2000) + 12000
\n" ); document.write( "42000 = 30000 + 12000; Revenue = cost
\n" ); document.write( ":
\n" ); document.write( "How about this? Do you understand this now? \n" ); document.write( "
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