Answer: (2, -25)
Step-by-step explanation:
The x coordinate of the vertex is 
.
When x=2, 
.
So, the vertex is (2, -25).
<span>This would be a bell curve with a z-score of greater than +2.00, since 3 minutes is exactly two standard deviations greater than the mean of 2.00. Looking at a z-score table for the proportion of the curve that lies in the 1-tailed area greater than 2.00, we find that the value is .0228. This would be the probability that the conversation is over three minutes: 0.0228 or 2.28%.</span>
The answer is x=5 and here’s the steps
The answer is B. Draw a perpendicular bisector
