The answer is C. A way to find out is to add a few numbers from that group being specified. If you add 2 or even 100 to 3, the answer will be odd. If you add 12 to 3, you will get 15 which is a composite number. If you were to add 2 to 3, you will get 5 which is an odd number.
Answer
The last one
y+2=-(x+8)
He went upstream 3 hours and downstream two. 4x3=12 6x2=12
He went 24 miles.
12-3=9 they switch up and it still equals the same thing
