document.write( "Question 540943: The math club at Franklin Middle School is selling tutorial books. The club paid $136 for three cases each containing 72 books. The math club sells each book for $8\r
\n" ); document.write( "\n" ); document.write( "Use the function P = 8b - 136 where P is the profit in dollars and b is the number of books sold to determine how many books must be sold to make a profit.\r
\n" ); document.write( "\n" ); document.write( "Thanks! \n" ); document.write( "
Algebra.Com's Answer #353930 by Theo(13342)\"\" \"About 
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the function is P = 8b - 136.
\n" ); document.write( "P stands for the amount of profit.
\n" ); document.write( "b stands for the number of books.
\n" ); document.write( "in order to break even, the profit has to be equal to 0 based on this equation.
\n" ); document.write( "the equation becoms:
\n" ); document.write( "0 = 8b - 136.
\n" ); document.write( "add 136 to both sides of this equation to get:
\n" ); document.write( "136 = 8b.
\n" ); document.write( "divide both sides of this equation by 8 to get:
\n" ); document.write( "17 = b.
\n" ); document.write( "when b = 17, they break even because 17*8 = 136.
\n" ); document.write( "when b < 17, they lose money because profit will be negative.
\n" ); document.write( "when b > 17, they make money because profit will be positive. \n" ); document.write( "
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