This I just had to reply to.
10^4 = 10000.
10^3 = 1000.
10^2 = 100.
10^1 = 10.
10^0 = 1.
10^-1 = 0.1
10^-2 = 0.01
10^-3 = 0.001
10^-4 = 0.0001
and so forth...
Where is this used, in real life? In science articles and such.
Or, if you want an "application", not just shorthand for very large / very small numbers:
If a financial instrument has an APY of 5%, and it is worth $10000 now, how much will it be worth in 20 years?
10000 * (1.05^20) = 26532.977051...
Answer: $26532.98
If a financial instrument has an APY of 5%, how much does it have to be worth now, if 20 years from now it is to be worth $10000?
10000 * (1.05^-20) = 3768.894828...
Answer: $3768.89
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Re: Just started College Algebra
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