document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1138021>Question 1138021</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1) Balloons cost 50 cents each and streamers costs 20 cents each.<BR>\n" );
document.write( "a. Construct a formula for the cost, C, of x balloons and y streamers.<BR>\n" );
document.write( "b. Find the cost of 25 balloons and 20 streamers </SPAN>\n" );
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document.write( "Part A\r<BR>\n" );
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document.write( "1 balloon costs 50 cents<BR>\n" );
document.write( "x balloons cost 50*x cents (multiply both parts by x)<BR>\n" );
document.write( "1 streamer costs 20 cents<BR>\n" );
document.write( "y streamers cost 20*y cents\r<BR>\n" );
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document.write( "C = total cost in cents<BR>\n" );
document.write( "C = (balloon cost) + (streamer cost)<BR>\n" );
document.write( "C = (50x) + (20y)<BR>\n" );
document.write( "<font color=red>C = 50x + 20y</font>\r<BR>\n" );
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document.write( "Part B\r<BR>\n" );
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document.write( "Plug in x = 25 and y = 20<BR>\n" );
document.write( "C = 50*x + 20*y<BR>\n" );
document.write( "C = 50*25 + 20*y ..... replace x with 25<BR>\n" );
document.write( "C = 50*25 + 20*20 .... replace y with 20<BR>\n" );
document.write( "C = 1250 + 400 .... multiply<BR>\n" );
document.write( "C = 1650 .... add\r<BR>\n" );
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document.write( "It costs <font color=red>1650 cents</font>, which is equivalent to, <font color=red>16.50 dollars</font> (divide 1650 by 100). <BR>\n" );
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