document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=973291>Question 973291</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In 2000, the United States Postal Service charged $0.45 to mail a letter weighing up to 3 oz. and $0.30 each additional ounce. Write a function, in dollars, c(x), of mailing a letter weighing x ounces where x is an integer greater than 3. </SPAN>\n" );
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document.write( "c(x)=$0.45+(x-3)($0.30)<BR>\n" );
document.write( "c(x)=$0.45+$0.30x-$0.90<BR>\n" );
document.write( "c(x)=$0.30x-$0.45 </SPAN>\n" );
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