document.write( "Question 812181: Jonas bought 3 books. each book was the same price. after using a $10 off coupon,the total charge was $20 which equation can be used to find b the cost of each book? a)3b+10=20 b)3b-10=20 c)10b+3=20 d)10b-3=20 Thank You \n" ); document.write( "

Algebra.Com's Answer #489111 by TimothyLamb(4379) $\"\"$ $\"About$

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the non-discounted cost of the books is:
\n" ); document.write( "3b
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\n" ); document.write( "the discounted cost of the books is:
\n" ); document.write( "3b - 10 = 20
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\n" ); document.write( "Solve and graph linear equations:
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\n" ); document.write( "Solve quadratic equations, quadratic formula:
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