I don’t even know lol I struggled with this too,
So, questions 1 through 3 are pretty vague and you can basically put whatever you think. But... as a hint you might want to base your answers to 1 through 3 on question 4, which is more specific and gives you some clues.
For example, question 2 asks "When do people usually need Kleenexes?" Question 4 basically answers this for you by saying "...blah blah blah are used throughout the duration of a cold." So you could easily say that people usually need Kleenexes when they are sick. You could use this same type of reasoning to answer questions 1 and 3.
To answer 4 itself you need to know how to use confidence intervals. Are you familiar with that?
Question 5 will be based off of your answer to question 4.
we know that
If the point belongs to the graph, then the point must satisfy the equation
we will proceed to verify each case
<u>case A.)</u> 
The point is 
Verify if the point satisfy the equation
For 
find the value of y in the equation and compare with the y-coordinate of the point
therefore
the equation not passes through the point
<u>case B.)</u> 
The point is
Verify if the point satisfy the equation
For find the value of y in the equation and compare with the y-coordinate of the point
therefore
the equation passes through the point
<u>case C.)</u> 
The point is
Verify if the point satisfy the equation
For find the value of y in the equation and compare with the y-coordinate of the point
therefore
the equation not passes through the point
<u>case D.)</u> 
The point is
Verify if the point satisfy the equation
For find the value of y in the equation and compare with the y-coordinate of the point
therefore
the equation passes through the point
therefore
<u>the answer is</u>
