Please help Im stuck.

Original Question: I also provided the drop down selections below

Let X represent the number of occupants in a randomly chosen car on a certain stretch of highway during morning commute hours. A survey of cars showed that the probability mass function of X is as follows. K 1 2 3 5 P(X=k) 0.61 0.10 0.11 0.03 0.15 a) P(X