Please help me please

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

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)

Find the measure of angle a in the following triangle