A median is the middle number of a data set. 
To find it put the numbers in order. 
78, 69, 69, 96, 99
Then find the middle number
78, 69, *69,* 96, 99
The median is 69
A mode is the number that appears the most in a set of numbers.
78, *69, 69,* 96, 99
The mode is 69
To find the mean or average of a set of numbers, add all the numbers together then divide by the number of numbers there are.
99+69+96+69+78 = 411
411/5 = 82.2
The mean is 82.2
Hope this helped! If you have anymore questions or don't understand, please comment on my profile or DM me. :)
        
             
        
        
        
Answer:
  =  1  7/8
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
81/70
Step-by-step explanation:
5/14+4/5=25/70+56/70=81/70
 
        
                    
             
        
        
        
F(x) = x^2 +5x + 3
     = (x + 2.5)^2 - 6.25 + 3
     = (x + 2.5)^2 - 3.25
That is vertex form. I am not sure what you mean by function form
        
             
        
        
        
0.05 is the answer for your question.