Answer:
This is a scale to compare sizes
The answer would be B. It has made the process faster.
U mean cites ? in the phrase of densely populated area ?
Oceanography but the study of ocean creatures is Marine Biology
First to subtract by the 3 from the both sides. Then cross out 3 -3 it equals to 0.
(3n+7)
-3 -3
~~~~~~
4
Answer is n=4
