document.write( "Question 1014876: The table shows cost of purchasing textbooks. What is cost of textbook and cost of shipping when 2 textbooks have a total cost of $190. 4 textbooks would total cost $350.
\n" ); document.write( "Y=160 (x)+b is so far what I got.
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Algebra.Com's Answer #631190 by Boreal(15235)\"\" \"About 
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Books =x
\n" ); document.write( "shipping = y
\n" ); document.write( "2x+y=190
\n" ); document.write( "4x+y=350
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\n" ); document.write( "2x+y=190
\n" ); document.write( "-4x-y=-350
\n" ); document.write( "-2x= -160
\n" ); document.write( "x=$80
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\n" ); document.write( "y=$30
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