Answer:
a=10 b=30 c=20
Step-by-step explanation:
10+30=40 30+20=50 20+10=30
2, 4 are the correct ones
3.024 is greater.
3.05 is greater because it expanded is 3.050 vs. 3.024. 3.024 is closer to 1, so it's greater.
X Y
4. 2
8. 3
12. 4
hope this is helpful for you