Question

Rewrite the following function in terms of common logarithms. (Don't forget to put the argument in parentheses.)
f (x) = log9 (2x8)

Answer 1

If I'm not mistaken, they must want you to write it like this:

\[f(x) = 8 \dot\ \log_{9}{2x}\]

Answer 2

Looks a little weird, but I think that's what they want

Answer 3

Use the change of base formula: f(x)=log(2x^8)/log(9)

Answer 4

can you do step by step?