document.write( "Question 1041214: What is the cost per handbag, if The cost of making 2 bags is $640, and the cost of making 5 bags is $700? Thanks! \n" ); document.write( "
Algebra.Com's Answer #656165 by Boreal(15235)\"\" \"About 
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the points are (2,640) and (5,700)
\n" ); document.write( "The slope is (700-640)/(5-2)
\n" ); document.write( "That is 60/3 or 20.
\n" ); document.write( "Slope is 20.
\n" ); document.write( "Use point slope formula with either point
\n" ); document.write( "y-640=20(x-2)
\n" ); document.write( "y-640=20x-40
\n" ); document.write( "y=20x+600
\n" ); document.write( "use other point to check
\n" ); document.write( "y-700=20(x-5)
\n" ); document.write( "y=20x+600. The marginal cost per handbag is 20 dollars. It is assumed here that with 0 bags, the cost of having the materials and space is 600, and every handbag will cost an additional $20 with the fixed cost of $600 remaining.
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