Answer:
46 ft2
Step-by-step explanation:
esorry if it doesnt lph
 
        
             
        
        
        
This is the "empirical rule."  Approx. 68% of a data set lie within one standard deviation of the mean.
        
             
        
        
        
I don't understand.  What are the values given?  Are they values of an x,y plot?
If you plot them they are a straight line with y =6x - 2.9  but I don't know what you mean by when x=3 and y = 4?