Pls help on number 10 I’m stuck!

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

The clayton family’s pool has vertices at the coordinates (0, 2), (0, 5), (2, 5), (2, 6), (5, 6), (5, 1), (2, 1), and (2, 2). if each grid square has an area of 9 square feet, what is the area of the pool?

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