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)![]() ![]() You can put this solution on YOUR website! let f = the flat set-up fee \n" ); document.write( "let r = the price per hr of use \n" ); document.write( ": \n" ); document.write( "Write an equation for each statement \n" ); document.write( ": \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 \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Check this in the Gina's equation \n" ); document.write( "5(35) + 60 = \n" ); document.write( "175 + 60 = $235\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " How much is the set up fee? What is the hourly rental fee? \n" ); document.write( " |