20 points someone please help me find x for each one

Write the equation in logarithmic form 8^x=64

Due to financial difficulties the owner of 4 skateboard stores is going to close 2 of his stores. based on the money earned at each store, which two stores should remain open?

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x