Answer:
yes
Step-by-step explanation:
the nearest ten would be 50, Just go up till the next 10,20,30,40,50,60,70.etc. all of them are by tens
40-44 is going down 45-49 is going up
Answer:
Step-by-step explanation:
Circumference C=2πr r=radius 
C=2(3.14)9.7
C=60.9
He is incorrect because each number is in a different place and those different places are worth more or less than the other places