document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1168863>Question 1168863</A>: <I><SPAN STYLE=\"word-break: break-all;\"> To mail a first class letter, the U.S. Postal Service charges $0.49 for the first ounce and $0.21 for each additional ounce.  Write a function that represents the total cost, in dollars, of a letter of w weight in ounces.  Now suppose it costs $1.12 to mail your letter.  How many ounces does your letter weigh? <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #793646 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=793646\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> equation would be y = .28 + .21 * x for x = integer >= 1<BR>\n" );
document.write( "x = number of ounces.<BR>\n" );
document.write( "y = total cost\r<BR>\n" );
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document.write( "if x = 1, cost is .28 + .21 * 1 = .49<BR>\n" );
document.write( "if x = 2, cost is .28 + .21 * 2 = .70<BR>\n" );
document.write( "if x = 3, cost is .28 + .21 * 3 = .91<BR>\n" );
document.write( "etc.\r<BR>\n" );
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document.write( "to find the cost for mailing a letter, calculate the number of ounces and then use the equation to find the costs.\r<BR>\n" );
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document.write( "if you want to send 4 ounces, the cost would be y = .28 + 4 * .21 = 1.12\r<BR>\n" );
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