-28xy/4
-7xy
Therefore, the first answer is correct.
Hope this helps!
Answer: 
Step-by-step explanation:
Given : Sample size : n= 33
Critical value for significance level of
: 
Sample mean : 
Standard deviation : 
We assume that this is a normal distribution.
Margin of error : 
i.e. 
Hence, the margin of error is 
Answer: This is the percentage increase.
Step-by-step explanation:
265.28925619834706%
Answer:
Step-by-step explanation:
Draw a circle with center (-4,6) and radius 4 .
It will touch the y-axis exactly at one point.
Answer:
... sorry
Step-by-step explanation:
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