On march 3, abc purchased a desk for $450 on account. On march 22, abc purchased another desk for $500 also on account, and then on march 24, abc paid $400 on account. At the end of march, what amount should abc report for desks (assuming these two desks were the only desks they had)? (just type numbers).

Layer r contains a well-known index fossil that is 100 million years old. based on this information and the principle of superposition, a. layers t and m are older than 100 million years, and layers x and g are younger than 100 million years. b. layers t, m, x, and g are all older than 100 million years. c. layers t and m are younger than 100 million years, and layers x and g are older than 100 million years.