Answer:
Reading up to down
1. 3 = The cost of one sticker
2. 20 = Total number of stickers Angelique can buy
3. s = Number of stickers Angelique bought
4. 20 - s = Number of stickers Angelique can buy with her remaining money
5. 60 = The amount of money Angelique saved
6. 3s = The amount of money Angelique spent on some stickers