I am having difficulty working this problem out, could you go over this step by step?

American Airlines' flights from Tampa to Chicago are on time 40% of the time. Suppose 5 flights are randomly selected, and the number on-time flights is recorded. Determine the following probabilities. Round solutions to four decimal places, if necessary. The probability that exactly 4 flights are on time is: P(x = 4) The probability that at most 3 flights are on time is: P(a