Tickets to a concert cost $2 for children, $3 for teenagers and $5 for adults. when 570 people attended the concert, the total ticket receipts were $1950. three-fourths as many teenagers as children attended. how many adults attended? a . 200 b . 150 c . 220 d . 316

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.