SOLUTION: A recently released collectible quarter, worth 25 cents now, is expected to increase in value by 8% per year. How much is the coin expected to be worth in 109 years?

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Question 978768: A recently released collectible quarter, worth 25 cents now, is expected to increase in value by 8% per year. How much is the coin expected to be worth in 109 years?
Found 3 solutions by Theo, Alan3354, josmiceli:
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
.25 * 1.08^109 = 1099.333232


Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
A recently released collectible quarter, worth 25 cents now, is expected to increase in value by 8% per year. How much is the coin expected to be worth in 109 years?
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FV = 25*1.08^109
= 109933 cents
= $1099.33
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There's a good chance you'll lose it in 109 years, tho.

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
For now, let +v+ = the starting value of the coin
After 1 year:
Value = +v+%2B+.08v+
After 2 years:
Value = +%28+v+%2B+.08v+%29+%2B+%28+v+%2B+.08+%29%2A.08+
Value = +%28+v+%2B+.08v+%29%2A%28+1+%2B+.08+%29+
Value = +v%2A%28+1+%2B+.08+%29%5E2+
After 3 years:
Value = +v%2A%28+1+%2B+.08+%29%5E3+
After 109 years:
Value = +.25%2A%28+1+%2B+.08+%29%5E109+
Take the log of both sides
+log%28+V+%29+=+log%28%28+1.08%5E109+%29%29+%2B+log%28%28+.25+%29%29+
+log%28+V+%29+=+109%2Alog%28%28+1.08+%29%29+%2B+log%28%28+.25+%29%29+
+log%28+V+%29+=+109%2A.03342+-+.60206+
+log%28+V+%29+=+3.6432+-+.60206+
+log%28+V+%29+=+3.04114+
+V+=++1099.36+
The coin will be worth $1,099.36 in 109 years
check:
Value = +.25%2A%28+1+%2B+.08+%29%5E109+
Value = +.25%2A1.08%5E109+
Value = +.25%2A4397.333+
Value = +1099.33+
OK