If there are 21 students in class today how much would it cost for the class and your teacher to ride the sandia aerial tram? rates $25 adults $20 seniors 62+ & teens 13-20 yrs $15 youth 5-12 yrs Please help due soon :(

Christine wong has asked dave and mike to her move into a new apartment on sunday morning. she has asked them both, in case one of them does not show up. from past experience, christine knows that there is a 40% chance that dave will not show up and a 30% chance that mik a. what is the probability that both dave and mike will show up? (round your answer to 2 decimal places.) b. what is the probability that at least one of them will show up? c. what is the probability that neither dave nor mike will show up? (round your answer to 2 decimal places.)e will not show up. dave and mike do not know each other and their decisions can be assumed to be independent.