Esperanza is determining whether she has enough money to buy a pizza and still tip the delivery person. The pizza costs $15 plus 7.5% sales tax, and Esperanza wishes to tip twice the amount of the sales tax. She has only a $20 bill. She also remembered that Pizza the Hut recently added a $1.50 delivery fee. What is the amount of tax? What is the amount of tip? Explain why she does or does not have enough money.

An oil exploration company currently has two active projects, one in asia and the other in europe. let a be the event that the asian project is successful and b be the event that the european project is successful. suppose that a and b are independent events with p(a) = 0.2 and p(b) = 0.8. (a) if the asian project is not successful, what is the probability that the european project is also not successful? (b) what is the probability that at least one of the two projects will be successful? (c) given that at least one of the two projects is successful, what is the probability that only the asian project is successful? (round your answer to three decimal places.)