document.write( "Question 446334: You bought 3 books for $22.50 at a 7% tax rate. How much was the tax? \n" ); document.write( "

Algebra.Com's Answer #307348 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"x\"$ = cost of 3 books before tax
\n" ); document.write( " $\"+x+%2B+.07x+=+22.5+\"$
\n" ); document.write( " $\"+1.07x+=+22.5+\"$
\n" ); document.write( " $\"+x+=+22.5%2F1.07+\"$
\n" ); document.write( " $\"+x+=+21.03+\"$
\n" ); document.write( "The tax was
\n" ); document.write( " $\"+.07x+=+.07%2A21.03+\"$
\n" ); document.write( " $\"+.07%2A21.03+=+1.47+\"$
\n" ); document.write( "The tax was $1.47 for 3 books \n" ); document.write( "

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