Without using a calculator, solve these two problems from a college entrance exam.

1. If $x^{–4/3} + 1 = 17$, what is $x^{–1/3}$?

   Hint (a):

   Solve the first equation for $x$, then use that value to find the answer.

2. If $\text{log}\left(A\right) = a$ what is $\log(\frac{A}{100})$?

   Answer (b):

   $a − 2$