document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=525074>Question 525074</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A small business buys a computer for $3300. After 4 years the value of the computer is expected to be $200. For accounting purposes the business uses linear depreciation to assess the value of the computer at a given time. This means that if V is the value of the computer at time t, then a linear equation is used to relate V and t.<BR>\n" );
document.write( "(a) Find a linear equation that relates V and t. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #348008 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=348008\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A small business buys a computer for $3300. After 4 years the value of the computer is expected to be $200. For accounting purposes the business uses linear depreciation to assess the value of the computer at a given time. This means that if V is the value of the computer at time t, then a linear equation is used to relate V and t.<BR>\n" );
document.write( "(a) Find a linear equation that relates V and t.<BR>\n" );
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document.write( "You have 2 points: (0,3300) and (4,200)<BR>\n" );
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document.write( "slope = (200-3300)/(4-0) = -3100/4 = -775<BR>\n" );
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document.write( "Form: V = mt + b<BR>\n" );
document.write( "You know m = -775 and V = 3300 when t = 0<BR>\n" );
document.write( "Solve for \"b\":<BR>\n" );
document.write( "3300 = -775*0 + b<BR>\n" );
document.write( "b = 3300<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "V(t) = -775t + 3300<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "==================== </SPAN>\n" );
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