Solve the equation $4^y=64$4y=64 for $y$y.

Solve the equation $4^y=256$4y=256 for $y$y.

Solve the equation $5^{10x+33}=125$510x+33=125 for $x$x.

Solve the equation $5^{-3x-1}=3125$5−3x−1=3125 for $x$x.