Question

The area of the scale model of a garden is 15 square feet. The scale model is enlarged by a scale factor of 3 to create the actual garden. Which expression finds the area of the actual garden?

Answer 1

If the sides are increased by a factor of 3, the area will be increased by

a factor of 3^2 or by a factor of 9
That is, the new area will be 9(15) ft^2 or 135 ft^2