Sticker Collection Calculation

Emma is collecting stickers for her album. In the first week, she collected 12 stickers. Each subsequent week, she collected 3 times the number of stickers she collected the previous week. How many stickers did she collect after 4 weeks?

To find the total number of stickers after 4 weeks, calculate the stickers for each week based on the growing amount she collected each week:

Week 1: 12 stickers
Week 2: $3 \times 12$
Week 3: $3 \times ext{{[Week 2 Stickers]}}
Week 4: $3 \times ext{{[Week 3 Stickers]}$