In the example, 16 is what percent of 80? , what does 16 represent in the percent proportion

Use the elimination method to solve the system of equations -x+5y=-4 and 4x+3y=16

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

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?