If log x = 2 log y - log z, what is an expression for x?

Answer: C) y^2/z
Step-by-step explanation:
Use the log law: a * log(b) = log(b^a)
In this case 2 log(y) will become log(y^2).
The equation is now log(x) = log(y^2) - log(z).
The difference of two logs is the log of the quotient (log(a) - log(b) = log(a/b).
Therefore, log(x) = log(y^2/z)