How many different outfits can Amy make with 3 blouses and 3 pairs of pants?

To determine the number of different outfits Amy can make with 3 blouses and 3 pairs of pants, we use the fundamental counting principle. Since she has 3 choices of blouses and 3 choices of pants, the total number of outfits is 3 (blouses) x 3 (pants) = 9 different outfits. Amy can create 9 unique combinations by mixing and matching the blouses and pants.