Asap if you only know a couple it’d still

which answer you want me to you with

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0

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)