document.write( "Question 994078: Erasers cost 45 cents apiece. Notebooks cost 90 cents apiece. Karla spent $18 for a total of 28 erasers and notebooks. How many notebooks did she buy \n" ); document.write( "
Algebra.Com's Answer #741636 by derosejulia(1)\"\" \"About 
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.90x+.45y=18.00
\n" ); document.write( ".90x+.45(28)=18.00
\n" ); document.write( ".90x+12.6=18.00
\n" ); document.write( ".90x=5.4
\n" ); document.write( "x= 6 notebooks
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