Algebra.Com's Answer #819120 by ikleyn(52786)![\"\"](\"/images/stars/stars-13.gif\")  
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document.write( "Producer will make 2,000 refrigerators available when the unit price is $330.
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document.write( "At a unit price of $390, 6,000 refrigerators will be marketed.
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document.write( "A) How many refrigerators will be marketed when the price is $450 ?
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document.write( "B) At or below what price will a refrigerator not be marketed ?
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document.write( "They want you create a linear function of the form\r\n" );
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document.write( " y = mx + b,\r\n" );
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document.write( "expressing the number of produced refrigerators y as the function of unit price x.\r\n" );
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document.write( " | Start determine the slope coefficient m. |\r\n" );
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document.write( "It is the ratio of increment of y (the number of refrigerators) to the increment of unit price\r\n" );
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document.write( " m =  =  = use your calculator = 66  = 66.666...\r\n" );
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document.write( "So, the function is \r\n" );
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document.write( " y - 2000 = 66.666*(x-330). (1)\r\n" );
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document.write( " | Now I am in position to answer the questions. |\r\n" );
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document.write( "(A) To answer this question, simply substitute x= 450 into the formula. You will get\r\n" );
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document.write( " y - 2000 = 66.666*(450-330) = 66.666*120 = 8000\r\n" );
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document.write( " which gives y = 8000 + 2000 = 10000 refrigerators. ANSWER\r\n" );
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document.write( "(B) In the formula (1), we should place y = 0 and find the corresponding value of x.\r\n" );
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document.write( " You have then\r\n" );
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document.write( " 0 - 2000 = 66.666*(x-330)\r\n" );
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document.write( " 66.666x - 66.666*330 = - 2000\r\n" );
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document.write( " 66.666x = -2000 + 66.666*330 = 19999.78\r\n" );
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document.write( " x =  = 300 dollars. ANSWER\r\n" );
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document.write( " At the price of $300, the producer will stop making refrigerators.\r\n" );
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document.write( "Solved.\r
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document.write( "All question are answered, and you got full clear concise explanations.\r
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