document.write( "Question 220864: Ok this one is stumping me. \r
\n" ); document.write( "\n" ); document.write( " An outdoor amphitheatre has 25,000 seats. Ticket prices are $15, $17, and $25. The number of tickets priced at $17 must equal two times the number priced at $25. How many tickets should be sold ( assuming all seats can be sold) to bring in $434,500? . Set up a system of equations an dsolve using th inverse matrix method. \r
\n" ); document.write( "\n" ); document.write( " I was setting up like this:\r
\n" ); document.write( "\n" ); document.write( " X+Y+Z = 25,000
\n" ); document.write( " 15x + 17y + 25z = 43500\r
\n" ); document.write( "\n" ); document.write( "But I cannot get a third set to be able to use the inverse function on my TI84
\n" ); document.write( "without it I get the \"INVALID DIM\" error\r
\n" ); document.write( "\n" ); document.write( " HELP!!!!!
\n" ); document.write( "

Algebra.Com's Answer #165695 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
An outdoor amphitheatre has 25,000 seats. Ticket prices are $15, $17, and $25. The number of tickets priced at $17 must equal two times the number priced at $25. How many tickets should be sold ( assuming all seats can be sold) to bring in $434,500? . Set up a system of equations an dsolve using th inverse matrix method.
\n" ); document.write( "I was setting up like this:
\n" ); document.write( "X+Y+Z = 25,000
\n" ); document.write( "15x + 17y + 25z = 43500
\n" ); document.write( "The number of tickets priced at $17 must equal two times the number priced at $25.
\n" ); document.write( "y = 2z
\n" ); document.write( "-----------
\n" ); document.write( "That's the 3rd equation.
\n" ); document.write( "Email me via the thank you note for help, or to check you work if you like.
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