What is the rate of change and constant rate of change of 5/140 8/244 15/420 (this is a table)

Factor the expression using the gcf. the expression 21m−49n factored using the gcf

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm

Set up and solve a proportion for the following application problem. if 55 pounds of grass seed cover 404 square feet, how many pounds are needed for 7272 square feet?