Andrew calculates that 40% of 50% of x is equal to 20% of 30% of y, where x ≠ 0. Which of the following is true?

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?

Acd that is originally priced at $15.85 red-tagged for the sale. what is the sale price of the cd

Solve 13 + w/7= -18 (w/7 is a fraction)