document.write( "Question 159363This question is from textbook college algebra
\n" ); document.write( ": O my thank you so much for your help with this word problem. Suppose that a car rental agency charges a fixed amount per day plus an amount per mile for renting a car. Heidi rented a car one day and paid $80 for 200 miles. On aanother a day she rented a car from the same agency and paid $117.50 for 350 miles. Determine the linear function tha tthe agency could use to determine its daily rental charges. Many thanks for your time with this one. \n" ); document.write( "
Algebra.Com's Answer #117489 by stanbon(75887)\"\" \"About 
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Heidi rented a car one day and paid $80 for 200 miles. On aanother a day she rented a car from the same agency and paid $117.50 for 350 miles. Determine the linear function tha tthe agency could use to determine its daily rental charges.
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\n" ); document.write( "You have two points that relate distance to charge: (200,80) and (350,117.50)
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\n" ); document.write( "slope = (117.50-80) / (350-200) = 0.25
\n" ); document.write( "intercept: 80 = 0.25*200 + b; b = 30
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\n" ); document.write( "EQUATION:
\n" ); document.write( "C(x) = 0.25x + 30 dollars
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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