Which of the following statements are not true regarding functions. ? A. the horizontal line test may be used to determine whether a function is one to one.

B. a function is related in which each value of the input variable is paired with at least one variable of the output variable.

C. a sequence is a function whose domain is the set of natural numbers.

D. the vertical line test may be used to determine whether a function is one to one .

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.)