Michael owns dogs, hamsters and fish in the ratio 2:3:6 If he has 6 hamsters, how many pets does he have?

Do you mind if you guys me with this question i’m on number 8

How many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.) how many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.)

If each bricks costs and he can only buy one brick how much will it cost him to get the material to put around the outside of his garden?