3) will be a horizontal line just forever stretching across  the 7 y value never straying
4) will be a vertical line just forever stretching across  the 1 x value never straying
5 & 6  are the ones I don't understand
        
             
        
        
        
Answer: $ 39.60
Step-by-step explanation:
36 + (36*0.10) = 39.60
 
        
             
        
        
        
53 divided by 34 is 1.558823529
        
             
        
        
        
80 x .72 = $57.60 
Easy peasy
        
             
        
        
        
Part A: 65/90 because you take the given number of positive test and put it over the total number of test. 
Part B: it’s dependent because it depends on the negative to get the probability/likely hood.