Hello please help me
Idk if the answer is 16 or 19

4 - 16 ÷ 4 + 4²

What is an alternate exterior angle

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?

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class