Hey there!
The answer is C.
To calculate the mean, you add all the values together then divide by the amount of values you have.
Since we are adding 5 numbers together, we divide it by 5.
Don't let the subtraction signs confuse you, it just means that some of the numbers are negative.
Hope this helps!
I think the answer is D and the reason why is because the picture shows
F) no solution BC it’s not consistent
Step-by-step explanation:
the average change rate of a function f(x) in an interval [x1 .. x2] is
(f(x2) - f(x1)) / (x2 - x1)
in our case that is
(7000 - 2500) / (20 - 0) = 4500 / 20 = 225
the population changed in average by 225 people per year from 1900 to 1920.