Megan solved the following exponential equation for x. what did she do wrong

Find the balance at the end of 4 years if 1000 is deposited at the rate of

Me because some of question i don’t understand

Given a binomial distribution variable with n=20 and p=0.60 find the following possibilities using the binomial table a) p(x < 13) b) p x > 15) c) p(x = 17) d) p(11 < x < 14) e) p(11 < x < 14)