Can someone explain how to do 60 and 62?

In question 60, the base change property was used.

This property says that:

Remember that the base of the neperian logarithm (ln) is the number of euler "e"

So:

Option C

In question 62, use the base change property again. We have:

Let's change the to the

So:

----------- lower the exponent in the numerator ) and calculate the log of the denominator.

Option E

the answer would be 1 1/72

step-by-step explanation:

you can rewrite the equation by separating the parts and then solving individually:

10-9=1

1/8 - 1/9=

find l c d and then combine:

1 1/72