document.write( "Question 289499: This is driving me nuts. Can I please get your help!!!!!\r
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document.write( "The Everton College store was paid $1986 for an order of 50 calculators. The store paid $9.00 for each sciuentific calculators, The others, all graphing calculators, cost the store $57 each. How many of each type of calculator were ordered?
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document.write( "Scientific_____
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document.write( "praphing_______ \n" );
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Algebra.Com's Answer #209654 by Grinnell(63)![]() ![]() ![]() You can put this solution on YOUR website! This problem involves knowing how to set up the algebraic expression, given the English. \n" ); document.write( "$1986 is the total amount of money spent. \n" ); document.write( "50 is the total amount of units bought. \n" ); document.write( "So if we let (50-x) represent the amount of Scientific Calculators, \n" ); document.write( "then x represents the amount of graphing calculators. STOP-- \n" ); document.write( "Go over what I just meant. Understand this!\r \n" ); document.write( "\n" ); document.write( "OK? Now 9(50-x) represents the amount of money spent on Scientific Calculators. \n" ); document.write( "(I've decided not to deal with dollar signs right now.) \n" ); document.write( "57(x) represents the amount of money spent on Graphing Calculators. \n" ); document.write( "NOW...9(50-x) + 57(x) = 1986. \n" ); document.write( "We use the Distributive Property of Multiplication over addition and subtraction... \n" ); document.write( "450-9x+57x=1986 \n" ); document.write( "48x=1536 \n" ); document.write( "x=32 \n" ); document.write( "NOW we go back and read what the problem is asking for. And, we want to remind ourselves what x was/is. x is the amount of Graphing Calculators, which is 32. (50-x) is the amount of Scientific Calculators, which is then 18. \n" ); document.write( " |