(b)
i do not know number 2 sorry
3. (A)
hope it helps have a great day :D
39 times 3 and 15 times 3 then 27 times 2 then add together to get 216
Answer:

Step-by-step explanation:

just multiply across
-k*7=-7k
5*5=25

hope this helps
To find population density, it is population / area.
The population is 6688, divided by the area of 16.
6688/16 = 418
So the population density is 418 people per sq mile.
300,563 Hope it helps! ^^
~Ash~