Demography is the study of human populations, in reference to size, quantities, diversity, location and distribution among the planet. Demographers look at statistics such as birth and death rates.
Answer:
0.8
Step-by-step explanation:
-2.8 + 3.6 = 0.8
Thanks for the correction. Answer: No,

is a polynomial expression because it has a break between numerical exponents. It goes from

to

, which makes it in the form of

to

which means that it is NOT a polynomial.
Answer:
84 mm
Step-by-step explanation:
1 cm = 10 mm
8.4 cm = 84 mm