Respuesta :

Answer:  2.2

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Explanation:

The population was 313 million and it jumped up to 324 million. This is an increase of 324-313 = 11 million

Divide this over 5, since this is the span of time from 2012 to 2017 (ie 2017-2012 = 5)

We get (11 million)/5 = 2.2 million

We basically divide 11/5 to get 2.2, then stick "million" at the end.

The average rate of change is 2.2 million people per year. This means that every year, on average, the population is going up by 2.2 million people.

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Effectively, we just computed the slope through the points (2012,313) and (2017,324)

Note how using the slope formula gets us to the same result

m = slope

m = rise/run

m = (change in population)/(change in time)

m = (change in y)/(change in x)

m = (y2-y1)/(x2-x1)

m = (324-313)/(2017-2012)

m = 11/5

m = 2.2

The same idea applies if you tacked on "million" to each of the proper values mentioned.

Mathhater6

Answer:

2,200,000 people

2.2 million

Step-by-step explanation:

You have 324 million in 2017 and 313 million in 2012

To find the average subtract the 2017 average from the 2012 average

324,000,000-313,000,000=11,000,000

That is not the average, that's the difference. To find the average, subtract the years to see how many years went by and divide 11,000,000 by that.

11,000,000/5=2,200,000

There is a 2,200,000 rate change per year

Another way would be:

324-313=11

2017-2012=5

11/5=2.2

2.2 million rate change

Hope that helps and don't be afraid to reach out with any further questions!

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