If f(x)=-4^2-6x-1 and g(x)=-x^2-5x+3 find (f-g)(x)

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)