document.write( "Question 103750: I would like to know how I could show a real-life example of a linear function. \n" ); document.write( "
Algebra.Com's Answer #75695 by elima(1433)\"\" \"About 
You can put this solution on YOUR website!
You can rent an electricity generator for $4.80 per hour plus $100.00 for a full tank of petrol.
\n" ); document.write( "Let y represent the cost of using the generator.
\n" ); document.write( "Let x represent the hours.
\n" ); document.write( "The cost is $4.80 per hour plus $100.00 for a the petrol tank.
\n" ); document.write( "Translate the statement to an equation.
\n" ); document.write( "y = 100.00 + 4.80x
\n" ); document.write( "f(x) = 100.00 + 4.80x
\n" ); document.write( "Lets choose 6 for the hours,
\n" ); document.write( "substitute 6 for x.
\n" ); document.write( "f(6) = 100.00 + 4.80(6)
\n" ); document.write( "f(6) = 100.00 + 28.80 = 128.80
\n" ); document.write( "So, the cost of renting the generator for 6 hours is $128.80
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