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)
step-by-step explanation:
the number 100 represents the number of trials in the experiment.
49/100 represents the experimental probability of the coin landing heads up.