document.write( "Question 700506: Mark is selling buttons for $1.50 at a craft fair. He paid $25 for the booth space and $50 for supplies.\r
\n" ); document.write( "\n" ); document.write( "a.How many buttons will he need to sell to break-even (zero profit)?\r
\n" ); document.write( "\n" ); document.write( "b.If he sells 135 buttons, what will his profit be?\r
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\n" ); document.write( "\n" ); document.write( "For a. I got f(x)= 1.50x+75
\n" ); document.write( "and b. 40=x
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Algebra.Com's Answer #431849 by lynnlo(4176)\"\" \"About 
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(1)sell 50 buttons
\n" ); document.write( "(2)profit $127.50
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