Answer:
Then it would stay at 321 million
Step-by-step explanation:
if the birth and death rate is both 1000 then nothing will change. Population wise.
Not sure about the first one,
The second one is 1/9.
Answer:
B. 
Step-by-step explanation:
Well lets graph the following equation first,
H(x) = -.011(x - 82)^2 + 75
Then lets graph all the other equations.
Look at the image below↓
So A.
The purple line does not go farther or higher,
so A. is incorrect
B.
The black line goes higher and farther,
meaning it is correct.
C.
The red line goes farther but not higher.
So it is incorrect
D.
Again the blue line does not go farther of higher.
So its wrong.
<em>Thus,</em>
<em>answer choice B. </em>
<em>is correct.</em>
<em />
<em>Hope this helps :)</em>
Answer: 60°
Step-by-step explanation: A straight angle is 180°
180°- 120° = 60°