document.write( "Question 329414: Aki's bicycle design had determined that when x hundred bicycles are built, the average cost per bicycle is given by C(x)=0.5x^2-0.4x+7.064 where C(x) is in hundreds of dollars. How many bicycles should the shop build to minimize the average cost per bicycle? \n" ); document.write( "
Algebra.Com's Answer #236200 by nyc_function(2741)\"\" \"About 
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C'[x] = x - 0.4
\n" ); document.write( "& C\"[x] = +1
\n" ); document.write( "so setting C'[x] to 0 will give the minimum\r
\n" ); document.write( "\n" ); document.write( "x - 0.4 = 0
\n" ); document.write( "x = 0.4\r
\n" ); document.write( "\n" ); document.write( "Answer: 40 bicycles
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