document.write( "Question 1185004: Suppose that a manufacturer will place 1000 units of a product on the market when the price is $10 per unit, and 1400 units when the price is $12 per unit. Find the supply equation for the product assuming the price p and quantity q are linearly related. \n" ); document.write( "
Algebra.Com's Answer #815772 by ikleyn(52799)\"\" \"About 
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\n" ); document.write( "Suppose that a manufacturer will place 1000 units of a product on the market when the price is $10 per unit,
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\n" ); document.write( "Find the supply equation for the product assuming the price p and quantity q are linearly related.
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document.write( "The equation for supply is of the form  \r\n" );
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document.write( "    q = c + d*p,\r\n" );
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document.write( "where q is the quantity of items, produced and sold, while p is the price for single unit of production.\r\n" );
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document.write( "\"c\" and \"d\" are coefficients; in our consideration, they assumed to be constant.\r\n" );
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document.write( "You can approach this problem formally.  You have a straight line and two given points in it, (10,1000) and (12,1400),\r\n" );
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document.write( "and your task is to construct the appropriate linear function.\r\n" );
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document.write( "Then you write the standard interpolation-extrapolation equation\r\n" );
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document.write( "    q = \"q%5B1%5D\" + \"%28%28q%5B2%5D-q%5B1%5D%29%2F%28p%5B2%5D-p%5B1%5D%29%29%2A%28p-p%5B1%5D%29\"\r\n" );
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document.write( "and substitute there  given values  \"p%5B1%5D\"= 10,  \"p%5B2%5D\" = 12, \"q%5B1%5D\" = 1000,  \"q%5B2%5D\" = 1400.  You will get then\r\n" );
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document.write( "    q = 1000 + \"%28%281400-1000%29%2F%2812-10%29%29%2A%28p-10%29\" = 1000 + \"%28400%2F2%29%2A%28p-10%29\" = 1000 + 200*(p-10),\r\n" );
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document.write( "so the final form of your supply equation is\r\n" );
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document.write( "    q = 1000 + 200*(p-10),   or, EQUIVALENTLY,  q = 200p - 1000.      ANSWER\r\n" );
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