document.write( "Question 948712: You determine that if you drive your car 300 miles in a month it costs you $366, and it will cost you $510 if you drive your car 1500 mile a month. What is the cost for the month if you drive 1000miles? \n" ); document.write( "
Algebra.Com's Answer #579078 by stanbon(75887)\"\" \"About 
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You determine that if you drive your car 300 miles in a month it costs you $366, and it will cost you $510 if you drive your car 1500 mile a month. What is the cost for the month if you drive 1000miles?
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\n" ); document.write( "You have 2 points relating cost and distance:: (300,366) and (1500,510)
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\n" ); document.write( "slope = (510-366)/(1500-300) = 0.12
\n" ); document.write( "Form:: c(x) = mx+b
\n" ); document.write( "solve for \"b\"::
\n" ); document.write( "510 = 0.12*1500 + b
\n" ); document.write( "b = 330
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\n" ); document.write( "Equation:: c(x) = 0.12x + 330
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\n" ); document.write( "Solution:
\n" ); document.write( "c(1000) = 0.12*1000 + 330
\n" ); document.write( "c(1000) = 120 + 330 = 450
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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