document.write( "Question 1204751: The total cost (in dollars) of producing x food processors is C(x) = 2500 + 80x - 0.3x^2\r
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\n" ); document.write( "b) Use the marginal cost to approximate the cost of producing the 81st food processor.\r
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\n" ); document.write( "\n" ); document.write( "Can you please help me with this homework question by showing the step-by-step calculations? I tried figuring it out on my own without any help but I couldn't find the answer. I got stuck! \n" ); document.write( "

Algebra.Com's Answer #841211 by ikleyn(52788) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "To answer question (a), you need calculate C(81) - C(80).\r\n" );
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document.write( "For it, calculate first C(81) by substituting x= 81 into the given formula\r\n" );
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document.write( "    C(81) = 2500 + 80*81 - 0.3*81^2.\r\n" );
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document.write( "Next, calculate C(80) by substituting x= 80 into the given formula\r\n" );
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document.write( "    C(80) = 2500 + 80*80 - 0.3*80^2.\r\n" );
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document.write( "Having C(81) and C(80), find their difference C(81)-C(80), which will be your answer to question (a),\r\n" );
document.write( "if you manage to make calculations correctly.\r\n" );
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document.write( "Do not tell me your story on how difficult it is, because it is NOT difficult.\r\n" );
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document.write( "In opposite, it is easy.\r\n" );
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document.write( "It is the reason why you go to school and learn your Math there - - -  TO      MIND and  \r\n" );
document.write( "   SKILLS - - - not mine.\r\n" );
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