Which value can be added to the set below without changing its mean?

{4, 10, 14, 18, 22, 22}

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?

The cost of a taxi ride includes an initial charge of $2.00. if a 5km ride cost $6.00 and a 10km ride cost $10.00, determine the cost of a 15km ride.

If x varies directly as y, and x = 7.5 when y = 10, find x when y = 4