document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1024181>Question 1024181</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me and show all work.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "A computer purchased for $700 loses 12% of its value every year.\r<BR>\n" );
document.write( "\n" );
document.write( " The computer's value can be modeled by the function v(t)=a&#8901;bt, where v  is the dollar value and t the number of years since purchase. \r<BR>\n" );
document.write( "\n" );
document.write( " (A) In the exponential model a=  and b=. (give your answers in decimal form; rounding to the nearest tenth if necessary) \r<BR>\n" );
document.write( "\n" );
document.write( " (B) In how many years will the computer be worth half its original value?  Round answer to 1 decimal place. \r<BR>\n" );
document.write( "\n" );
document.write( " The answer is  years </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #639634 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=639634\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A computer purchased for $700 loses 12% of its value every year.<BR>\n" );
document.write( "The computer's value can be modeled by the function v(t)=a&#8901;bt, where v is the dollar value and t the number of years since purchase.<BR>\n" );
document.write( "-----<BR>\n" );
document.write( " <BR>\n" );
document.write( "(A) In the exponential model a = 700 and b = 0.88<BR>\n" );
document.write( " (give your answers in decimal form; rounding to the nearest tenth if necessary)<BR>\n" );
document.write( " <BR>\n" );
document.write( "(B) In how many years will the computer be worth half its original value? Round answer to 1 decimal place.<BR>\n" );
document.write( "350 = 700*(0.88)^t<BR>\n" );
document.write( "0.88^t = 0.5<BR>\n" );
document.write( "----<BR>\n" );
document.write( "t = log(0.5)/log(0.88) = 5.4 years<BR>\n" );
document.write( "=============<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( " <BR>\n" );
document.write( "The answer is years  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );