Question

Alina started her stamp collection with 15 stamps. every month after that, she added 3 more stamps to her collection how many stamps did alina have in her collection after 36 months

Answer 1

123 is the answer she started with 15 so 3 for each month we know theres 12 months a year so its 36 times 3 thats 108 now you add 15 its 123.