Evaluate each expression without using a calculator or changing the form of the expression. 

1. $\log(1)$ 

   Hint (a):

   What power would you raise $10$ to equal $1$?

2. $\log(10^3)$ 

   Hint (b):

   What power would you raise $10$ to equal $10^3$?

3. $10^{\log(4)}$ 

   Hint (c):

   $m^{\log_m(n)}=n$

4. $10^{3\log(4)}$ 

   Hint (d):

   Combine the strategies from parts (b) and (c).