A bookstore classifies it's books by reader group, type of book, and cost. What is the probability that a book selected at random is a child’s book, given that is costs $15?

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?

Answer: c. x y2 04 66 16