document.write( "Question 285081: A printing machine has an original value of $100,000 and is to be depreciated linearly over 5 years with a $30,000 scrap value.
\n" ); document.write( "a) Find an expression giving the book value in terms of t (years)
\n" ); document.write( "b) Plot the equation in a rectangular coordinate system. Use time for the horizontal axis and Value of the machine for vertical axis.
\n" ); document.write( "c) What is the rate of depreciation of the machine?
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Algebra.Com's Answer #206717 by stanbon(75887)\"\" \"About 
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A printing machine has an original value of $100,000 and is to be depreciated linearly over 5 years with a $30,000 scrap value.
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\n" ); document.write( "Note: You have two points relating time and value:
\n" ); document.write( "(0,100,000) and (5,30,000)
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\n" ); document.write( "a) Find an expression giving the book value in terms of t (years)
\n" ); document.write( "Slope = (30000-100,000)/(5-0) = -70,000/5 = -14000
\n" ); document.write( "intercept: 100,000
\n" ); document.write( "Equation: V(t) -14000t + 100,000
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\n" ); document.write( "b) Plot the equation in a rectangular coordinate system. Use time for the horizontal axis and Value of the machine for vertical axis.
\n" ); document.write( "Plot the two points and draw a line thru them in the 1st quadrant.
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\n" ); document.write( "c) What is the rate of depreciation of the machine?
\n" ); document.write( "Rate of depreciation = slope = -$14000 per year.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
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