Haley has enlarged a 3-inch by 5-inch picture so that both the length and width are tripled. The area of the enlarged photo is how many times the area of the original photo?
The area is enlarged by 3^2 = 9 times
To see this....let the original area = L * W
Then the new area = (3L) * (3W) = 9 (L*W) = 9 times the original area
