I need help solving this problem. Please help me by answering and showing explanations.

Question 1 1 pts The joint PMF of two random variables X and Y is given as follows: p(x,y) y-values 0 100 200 X- 100 0.1 0.2 K values 250 0.15 0.05 0.3 Then k= [ Select ] and Py (Y > 100) = [ Select ] Question 2 1 pts Continuing the previous problem, what is P(X