Answer:
190
Step-by-step explanation:
This rounds to 190 as it goes upwards
0 is not a significant figure unless it is between 2 significant figures
THEREFORE ITS 190
Answer:
170
Step-by-step explanation:
168.9 is between 160 and 170 ← both to 2 significant figures.
However 168.9 is nearer to 170 than 160, hence
168.9 ≈ 170 ( to 2 significant figures )
