Answer:
+7
Step-by-step explanation:
if you go from 28 to 21 you see there is a difference of 7 and sense the number is a smaller number now we know the dolphin went up more towards the surface there for there is a change of positive 7
28-21=7
Answer:
use division for the numbers.
Step-by-step explanation:
Your pic was kind of blurry. I hope this helps
Answer:
141414
Step-by-step explanation:
Answer:
51
Step-by-step explanation:
