Answer:
The time spent by a physician with a patient
Step-by-step explanation:
Option C is the answer
 
        
             
        
        
        
E) 12 minutes
A normal curve has approximately 95% of graph between mean - 2sd and mean + 2sd
So 95% of the times will be between 0 and 12 minutes. 6 - 2x3 to 6 + 2x3
2.5% will take over 12 minutes
Strangely 2.5% will also take less than 0 minutes to process which shows the normal curve is not perfect in this example.
        
             
        
        
        
Answer:
2.75
Step-by-step explanation:
(y-5)6+15–5y=5
(y-5+5)6-6+15-15–5y=5-6-15+5
y-5y=-11
-4y/-4=-11/-4
y=2.75
 
        
             
        
        
        
Answer:A
Step-by-step explanation:
 
        
             
        
        
        
Answer:
a = -12 
Remember that when a variable is times with a number, you <u>divide</u> the number on both sides. 
When a variable is divided by a number, you <u>multiply</u> the number on both sides. 
Hope this helps you. Thank you !!