What is the greatest common factor of each?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

How do i put 3(x+7) in distributive property

At the county fair, the baxter family bought 6 hot dogs and 4 juice drinks for $12.90. the farley family bought 3 hot dogs and 4 juice drinks for $8.55. find the price of a hot dog and the price of a juice drink.