Question

what would 7^3 = 343 in logarithmic form look like ?

Answer 1

Recall that the expression in log form is:
\[\bbox[5px,border:2px solid black]{b^x=y \rightarrow \log_by=x}\]

Answer 2

Here we see that b = 7, x = 3, and y = 343.
Can you figure it out from here?