document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=168835>Question 168835</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/032800880x/algebrahomeworkh>California Mathematics</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> The temperature was 15C at noon when the cold front entered the area. The temperature began dropping at a rate of 7C per hour for the next several hours. Write an expression for what the temperature was after h hours. Evaluate the expression to find the temperature after 4 hours. \r<BR>\n" );
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document.write( "A submarine is 10 feet below sea level. it dives 8 feet per second. write an expression to describe the submarines position after s seconds. evaluate the expression to find the submarines position after 30 seconds.   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #124493 by </B><A HREF=/tutors/aboutme.mpl?userid=Mathtut><B>Mathtut(3670)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Mathtut><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=124493\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let h be the number of hours and C the temperature after h hours\r<BR>\n" );
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document.write( "15-7h=C evaluating h=4 we have 15-7(4)=-13Celcius<BR>\n" );
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document.write( "let s be the number of seconds and D be the depth after s seconds\r<BR>\n" );
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document.write( "10+8s=D...evaluating s=30 we have 10+8(30)=250 ft deep<BR>\n" );
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