One is 5% of what number?

100÷5=20

one is 5% of 20

hope this helps

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8

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)