Me on 9 & 10 ! will give you brainliest

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%

the correct is answer is a 9-sided polygon!

8

step-by-step explanation:

just put √(2) * √(32) into a calculator. that will make the answer be 8.