Calculate the area of a 3-inch by 5-inch photo. What would be the area if it is enlarged by a scale factor of 2? What would be the area if reduced by a scale factor of 1/2?

3 inch by 5 inch

A = L * W ... A = 3 * 5 ... A = 15 inches^2

if it is enlarged by a scale factor of 2 ...

3 x 2 = 6

5 x 2 = 10

Area = L * W ... A = 6 * 10 ... A = 60 inches^2

if reduces by a scale factor of 1/2 ...

3 x 1/2 = 3/2 = 1.5

5 x 1/2 = 5/2 = 2.5

A = L * W ... A = 1.5 * 2/5 ... A = 3.75 inches^2