document.write( "Question 1142156: Suppose that for a certain​ company, ​C(x)equals15xplus2200 represents the total cost​ function, and ​R(x)=40x represents the total revenue function.
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Algebra.Com's Answer #762816 by ikleyn(52803)\"\" \"About 
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document.write( "(a)  the total profit function is  \r\n" );
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document.write( "         P(x) = R(x) - C(x) = 40x - (15x + 2200).\r\n" );
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document.write( "(b)  The break-even point is the solution of the equation\r\n" );
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document.write( "        R(x) = C(x),   or\r\n" );
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document.write( "        40x = 15x + 2200,\r\n" );
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document.write( "        40x - 15x = 2200\r\n" );
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document.write( "        25x       = 2200\r\n" );
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document.write( "          x       = 2200/25 = 88.      ANSWER\r\n" );
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