**Problem : **
Evaluate
log 10000000
.

**Problem : **
Evaluate
log 36
.

**Problem : **
Evaluate
log 4128
.

**Problem : **
Evaluate
log 512
.

**Problem : **
Evaluate
ln *e*
^{12}
.

**Problem : **
Evaluate
ln 15
.

**Problem : **
Evaluate
ln 62
.

**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?

**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?

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

**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?

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