Can you show me how to do this problem please

2 3 5 Let X be a random variable with the following probability distribution: Value x of X P(X =x) 40 0.25 50 0.05 60 0.15 70 0.10 80 0.15 90 0.30 Find the expectation E () ) and variance Var (Y) of .Y. (If necessary, consult a list of formulas.) E (x) = 1 X var (x ) = 0