Mr. Young is buying a house. He can spend no more than 29% of his income on monthly house payments.
If he earns $4,200 per month, what is the largest
monthly house payment he can make?

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?