Change each of the following equations from logarithmic form to exponential form, or vice versa.

1. $y=\log_{12}x$ 

   Answer (a):

   $x=12^y$

2. $x=\log_y17$ 

3. $y=1.75^{2x}$ 

   Answer (c):

   $2x=\log_{1.75}(y)$

4. $3y=x^7$