In a jar there are 25 red marbles, 37 blue marbles, 24 green marbles, & 14 white marbles. What is the probability of randomly selecting a red or white marble?

The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. what is an efficient, unbiased point estimate of the number of books checked out each day at the library of congress?

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?