document.write( "Question 1178384: the total cost to produce 10 units of a certain product is $40,and for 20 units the cost is $70.the total cost is linearly related to number of units produces. find the total cost of producing 25 units. \n" ); document.write( "

Algebra.Com's Answer #850334 by josgarithmetic(39618) $\"\"$ $\"About$

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The description is of two points for x units and y cost , (x,y);
\n" ); document.write( "(10, 40) and (20, 70). These points are on a line.\r
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\n" ); document.write( "\n" ); document.write( "The question asks for what is the y value for (25, y).\r
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\n" ); document.write( "\n" ); document.write( "Or, trying looking at ratios from differences
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document.write( "Differences on the left and on the right of the columns\r\n" );
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document.write( "     x             y     \r\n" );
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document.write( "     10           40\r\n" );
document.write( "   10         \r\n" );
document.write( "                      30\r\n" );
document.write( "     20           70\r\n" );
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document.write( " 5                     d\r\n" );
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document.write( "     25            y\r\n" );
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\n" ); document.write( " $\"d%2F5=30%2F10\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"d%2F5=3\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"d=15\"$ \r
\n" ); document.write( "\n" ); document.write( "y value wanted is 70+15, or 85. \n" ); document.write( "

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