I don’t understand............ummm
Answer:

Step-by-step explanation:
Domain is the set of x-values. We look at the graph and look for the start of x-value.
The start of domain begins at x = -4 and has no ending (positive infinity.)
Thus, our answer is x >= -4
I’m pretty sure the answer is 3
Answer:
The cross section of sphere is circle
Area of cross section = 25 in²
Step-by-step explanation:
From the figure we can see a cylinder with height 8 inches and volume 200 π in³.
<u>The cross section of the cylinder looks like a circle.</u>
<u>To find the area of cross section</u>
Volume of cylinder = Cross section area * Height
200 = cross section area * 8
cross section area = 200/8
= 25 in²
Area of cross section = 25 in²
This is called random sampling. the other type of sampling is stratified sampling. :)