Abby said that 22.47 ÷ 2.1 equals 0.107. is abby's answer reasonable

What is the solution to the system of the equations? x = y - 3 x + 3y = 13

The clayton family’s pool has vertices at the coordinates (0, 2), (0, 5), (2, 5), (2, 6), (5, 6), (5, 1), (2, 1), and (2, 2). if each grid square has an area of 9 square feet, what is the area of the pool?

Two corresponding sides of two similar triangles are 3cm and 5cm. the area of the first triangle is 12cm^2. what is the area of the second triangle?