document.write( "Question 1109209: Gina rented a moon-walk for 5 hours at a total cost of $235. Lori rented the same moon-walk for 3 hours at a total cost of $165. The cost of renting is based upon a flag set up fee plus a rental rate per hour. How much is the set up fee? What is the hourly rental fee? \n" ); document.write( "
Algebra.Com's Answer #724286 by ankor@dixie-net.com(22740)\"\" \"About 
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let f = the flat set-up fee
\n" ); document.write( "let r = the price per hr of use
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\n" ); document.write( "Write an equation for each statement
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\n" ); document.write( " Gina rented a moon-walk for 5 hours at a total cost of $235.
\n" ); document.write( "5r + f = 235
\n" ); document.write( " Lori rented the same moon-walk for 3 hours at a total cost of $165.
\n" ); document.write( "3r + f = 165
\n" ); document.write( "We can use elimination here
\n" ); document.write( "5r + f = 235
\n" ); document.write( "3r + f = 165
\n" ); document.write( "----------------Subtraction eliminates f, find r
\n" ); document.write( "2r + 0 = 70
\n" ); document.write( "r = 70/2
\n" ); document.write( "r = $35 an hr rental
\n" ); document.write( "then find f
\n" ); document.write( "3(35) + f = 165
\n" ); document.write( "105 + f = 165
\n" ); document.write( "f = 165 - 105
\n" ); document.write( "f = $60 is the set-up fee
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\n" ); document.write( "Check this in the Gina's equation
\n" ); document.write( "5(35) + 60 =
\n" ); document.write( "175 + 60 = $235\r
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\n" ); document.write( "\n" ); document.write( " How much is the set up fee? What is the hourly rental fee?
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