Awnser:69
I had this question a few minutes ago, that’s funny
Answer:
sorry i was late but the answer is 100% A
Step-by-step explanation:
i just took the test made 100
The correct answer is D The last one
Step by step is below
Hopefully this help you
Have a great day :)
Answer:

The world population at the beginning of 2019 will be of 7.45 billion people.
Step-by-step explanation:
The world population can be modeled by the following equation.

In which Q(t) is the population in t years after 1980, in billions, Q(0) is the initial population and r is the growth rate.
The world population at the beginning of 1980 was 4.5 billion. Assuming that the population continued to grow at the rate of approximately 1.3%/year.
This means that 
So


What will the world population be at the beginning of 2019 ?
2019 - 1980 = 39. So this is Q(39).


The world population at the beginning of 2019 will be of 7.45 billion people.
Answer:
40
Step-by-step explanation:
-8*-5=40
two negatives equal a positive