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Logarithmic Functions

Problems

Problem : Evaluate log 10000000.

7.

Problem : Evaluate log 36.

1.556.

Problem : Evaluate log 4128.

3.616.

Problem : Evaluate log 512.

2.709.

Problem : Evaluate ln e12.

12.

Problem : Evaluate ln 15.

2.708.

Problem : Evaluate ln 62.

4.127.

Problem : If $800 is put into a bank account that yields 7.16% interest, compounded yearly, about how much money is in the account after 6 years?

$1229.31.

Problem : $800 is put into a bank account. After 5 years, there is $1006.88 in the account. What is the yearly compound interest rate of the account?

4.6%.

Problem : An account yields $1400 after 10 years at 6.0% interest, compounded yearly. How much money was put into the account to start?

$768.34

Problem : $1000 is put into an account that yields 15% interest, compounded yearly. The account yields $17287.78. For how many years is it left in the account?

19 years.