document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1191206>Question 1191206</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Shen is putting money into a savings account. He starts with 650 in the savings account, and each week he adds $30.<BR>\n" );
document.write( "Let S represent the total amount of money in the savings account (in dollars), and let W represent the number of weeks Shen has been adding money. Write an equation relating S to W. Then use this equation to find the total amount of money in the savings account after 11 weeks. </SPAN>\n" );
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document.write( "W = number of weeks<BR>\n" );
document.write( "S = total amount of money in the savings account (in dollars)\r<BR>\n" );
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document.write( "Shen starts off with $650.<BR>\n" );
document.write( "After 1 week, he adds on $30<BR>\n" );
document.write( "The balance would be 650+30 which I'll leave unsimplified.\r<BR>\n" );
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document.write( "After 2 weeks, he adds on another 30, so,<BR>\n" );
document.write( "balance = (650+30)+30 = 650+(30+30) = 650+2*30\r<BR>\n" );
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document.write( "Then after 3 weeks, his balance is...<BR>\n" );
document.write( "balance = (650+2*30)+30 = 650+(2*30+30) = 650+3*30\r<BR>\n" );
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document.write( "At this point you can probably spot the pattern<BR>\n" );
document.write( "balance = 650+(number of weeks)*30<BR>\n" );
document.write( "which simplifies to<BR>\n" );
document.write( "S = 650+W*30<BR>\n" );
document.write( "<font color=red>S = 30W+650</font>\r<BR>\n" );
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document.write( "Now plug in W = 11 to find how much is in the account after 11 weeks.<BR>\n" );
document.write( "S = 30W+650<BR>\n" );
document.write( "S = 30*11+650<BR>\n" );
document.write( "S = 330+650<BR>\n" );
document.write( "S = <font color=red>980</font>\r<BR>\n" );
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document.write( "Answers: \r<BR>\n" );
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document.write( "The equation is <font color=red>S = 30W+650</font><BR>\n" );
document.write( "After 11 weeks, Shen has <font color=red>$980</font> in the account.<BR>\n" );
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