Jaidee and Jacob each improved their yards by planting hostas and shrubs. They bought their supplies from the same store. Jaidee spent $80 on 1 hosta and 8 shrubs, Jacob spent $108 on 9 hostas and 4 shrubs. What is the cost of one hosta and the cost of one shrub? For an answer, put in only a number value.

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.)