document.write( "Question 322374: A lawn mower cost $490 when new and is expected to last 10 years. What will it be worth in 6.5 years?
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Algebra.Com's Answer #230787 by Fombitz(32388) $\"\"$ $\"About$

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In 10 years, it will be worth $0.
\n" ); document.write( "Find the slope of the depreciation curve using the points (0,490) and (10,0).
\n" ); document.write( " $\"m=%28y2-y1%29%2F%28x2-1%29=%280-490%29%2F%2810-0%29=-49\"$
\n" ); document.write( " $\"y=-49x%2Bb\"$
\n" ); document.write( " $\"490=-49%280%29%2Bb\"$
\n" ); document.write( " $\"b=490\"$
\n" ); document.write( " $\"highlight%28y=-49x%2B490%29\"$
\n" ); document.write( "Find y when x=6.5
\n" ); document.write( " $\"y=-49%286.5%29%2B490\"$
\n" ); document.write( " $\"y=-318.5%2B490\"$
\n" ); document.write( " $\"y=171.50\"$
\n" ); document.write( "The value would be $171.50.
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