Mariana is trying to pick out an outfit for the first day of school. She can choose from 8 pairs of pants, 3 t-shirts, 4 sweaters hoodies, and 4 pairs of shoes. How many different outfits does Mariana have to choose from?

To find the total number of different outfits Mariana can choose from, we need to multiply the number of options for each item of clothing:

8 pairs of pants * 3 t-shirts * 4 sweaters * 4 pairs of shoes = 384 different outfits

Therefore, Mariana has 384 different outfits to choose from for the first day of school.