Answer: Option b.
Step-by-step explanation:
1. You have the function 
given in the problem above.
2. You must keep on mind that. by definition, the division by zero does not exist.
3. The value x=3 makes the denominator of the function f(x) equal to zero. Therefore you can conclude that the function shown in the problem is not defined at x=3.
The answer is the option b.
The
<u>correct answer</u> is:
Matthew's rate is higher by $50 per month.
Explanation:
We know that Christopher's rate is $550 per month.
To find Matthew's rate, we will treat the data we have as ordered pairs:
(3, 1800)
(6, 3600)
(9, 5400)
We find the slope of the line between these points. The formula for slope is:
Using the first two points, we have:
To verify Matthew saves the same amount each month, we will find the slope between the second two points and make sure they're the same:
Matthew's rate is $600 per month.
This is higher than Christopher's by 600-550=$50 per month.
Answer:
1st: consistent and dependent
2nd: (-2,0). Simply put the called and check.
Answer:
a. increase the sample size
Step-by-step explanation:
The width of a confidence interval is twice the margin of error, which is given by:
In which 
is the standrd deviation of the population, n is the size of the sample, and z is the confidence coefficient(the higher the confidence level, the higher z is).
The only of those variables which is direct proportional to M is the sample size. This means that if we want to decrease the width of M, we need to increase the sample size.
So the correct answer is:
a. increase the sample size
