Susie has a bag with 9 hair pins, 6 pencils, 2 snacks, and 5 books. What is the ratio of books to pencils?

Anyone know? will mark brainliest if correct

The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is:

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?