document.write( "Question 147226This question is from textbook INTERMEDIATE ALGEBRA
\n" ); document.write( ": Different-sized reantal trucks cost $19.99,$29.99,or $39.99 plus $0.10 per mile. Equations are for the total erntal cost,C, in dollars, for x miles driven.\r
\n" ); document.write( "\n" ); document.write( "(it says en Exerises 21-26, write the equations and tell whether the graphs would be parallel lines.) \n" ); document.write( "
Algebra.Com's Answer #107601 by nerdybill(7384)\"\" \"About 
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Different-sized reantal trucks cost $19.99,$29.99,or $39.99 plus $0.10 per mile. Equations are for the total erntal cost,C, in dollars, for x miles driven.
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\n" ); document.write( "You basically have three different trucks that rent for a different cost:
\n" ); document.write( "If 'x' is \"miles driven\":
\n" ); document.write( "Then for the $19.99 truck:
\n" ); document.write( "C(x) = .10x + 19.99
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\n" ); document.write( "Then for the $29.99 truck:
\n" ); document.write( "C(x) = .10x + 29.99
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\n" ); document.write( "Then for the $39.99 truck:
\n" ); document.write( "C(x) = .10x + 39.99
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\n" ); document.write( "Notice for each of the equations above, they are in the format of the \"slope intercept\" form of a line:
\n" ); document.write( "y = mx + b
\n" ); document.write( "where
\n" ); document.write( "m = slope
\n" ); document.write( "b = y-intercept
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\n" ); document.write( "Notice that the \"slope\" (m) of each of the three equations are the same -- therefore, all three lines will be parallel.
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