"If two figures are similar how can you find the missing angle measurement or a missing side measurement?"

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

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?

Find the domain of the following expression: 1/(√x)-2