document.write( "Question 1131523: The price of a used car is decreasing exponentially. Today it is worth %15,000. In 3 months from now, it will only be worth $14,000. How much was it worth a year ago? \n" ); document.write( "
Algebra.Com's Answer #748199 by josmiceli(19441)\"\" \"About 
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Find the monthly rate of loss
\n" ); document.write( "\"+14000+=+15000%2A%28+1+-+r+%29%5E3+\"
\n" ); document.write( "\"+14%2F15+=+%28+1+-+r+%29%5E3+\"
\n" ); document.write( "\"+log%28+14%2F15+%29+=3%2Alog%28+1+-+r+%29+\"
\n" ); document.write( "\"+log%28+.9333+%29+=+3%2Alog%28+1+-+r+%29+\"
\n" ); document.write( "\"+-.029963%2F3+=+log%28+1+-+r+%29+\"
\n" ); document.write( "\"+-.0099877+=+log%28+1+-+r+%29+\"
\n" ); document.write( "\"+1+-+r+=+.977265+\"
\n" ); document.write( "\"+r+=+.0227+\" monthly rate of loss
\n" ); document.write( "-------------------------------------------
\n" ); document.write( "1 yr ago, or 12 months ago compared to today:
\n" ); document.write( "\"+15000+=+C%2A%28+1+-+.0227+%29%5E12%0D%0A%7B%7B%7B+15000+=+C%2A.9773%5E12+\"
\n" ); document.write( "\"+15000+=+C%2A.75916+\"
\n" ); document.write( "\"+C+=+19758.61+\"
\n" ); document.write( "A year ago the value was $19,758.61
\n" ); document.write( "check the math, get another opinion\r
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