Answer:
x = 18
Step-by-step explanation:
y = x + 8
2x + y = -10
Add 10 to 8, then subtract x from 2x leaving you with one x, and finally subtract y from y leaving you with X = 18
The first one I think is B
Answer: 2
Step-by-step explanation:
3 groups of 5, or 5 groups of 3.
The answer would be. 1/4 scale