document.write( "Question 953733: Isabel is considering a job as a waitrress. She would be paid $5 per hour plus tips. The waitstaff have told her that an average tip at that restaurant is $4.50 per table. If Isabel works 25 hours per week, how many tables would she have to serve in order to make $296 for the week?
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Algebra.Com's Answer #582509 by Theo(13342)![]() ![]() You can put this solution on YOUR website! \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x = number of hours \n" ); document.write( "y = number of tables.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "general equation is 5x + 4.50y = 296.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "that means 5 dollars per hour times the number of hours plus 4.50 per table times the number of tables is equal to 296 dollars.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "since she worked 25 hours, then replace x with 25 and the equation becomes:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "5*25 + 4.50y = 296\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "simplify to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "125 + 4.50y = 296\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "subtract 125 from both sides of the equation to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "4.50y = 296 - 125 which simplifies to 4.50y = 171.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "divide both sides of this equation by 4.5 to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y = 171 / 4.5 which becomes y = 38\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "she would have to wait on 38 tables to make 296 dollars.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "5 * 25 + 4.5 * 38 = 296\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "solution is confirmed.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "number of tables she would have to wait on are 38 in a 5 hours period of time.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |