What function flips graph of a function over the-axis?

f(x) > -f(x).

Step-by-step explanation:

We need to  multiply the function by -1 (make it negative).

So -f(x) is the image of f(x) over the x-axis.

what is the original number? you forgot to add it.

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)