9. The decrease in population for Lakeside 5,500.
You can find this by taking the new amount and subtracting the original amount. This will give you the net change.
new - old = net change
45,800 - 51,300 = net change
-5,500 = net change
10. The percent increase for Riverview is +51%.
You can find that by looking at the formula for percent change.



51%
3.5 , 3.3, -3, -3.25, -3.3
Considering that the data is only noted and not changed, this is an example of an observational study.
<h3>What are observational and experimental studies?</h3>
- Experimental study: In an experimental study, there is an intervention in a sample, and it's effect is studied.
- Observational study: In an observational study, the sample is just analyzed, without any intervention.
In this problem, the data, which is the number of miles traveled, is only analyzed, no interventions are made, hence this is an example of an observational study.
More can be learned about observational studies at brainly.com/question/24321224
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Y-axis is going up and down
X-axis is going left and right
I am so sorry that I am writing all this gibberish but it has to be 28 characters to be good so the answer is
h=14