Pressure treated wood and studs can be purchased for $4.88 each how many subs can be bought if a projector budget allots it's no more than $200 for studs

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)