Answer: The option B. 1.9 is correct
Explanation:
We are given the below information:
x               Probability P(x)
0                      0.2
1                       0.1
2                      0.4
3                       0.2
4                       0.1
The expected value of x is given below:

          
         
         
Therefore, the expected value of x is 1.9       
 
        
             
        
        
        
31.25 miles because I don’t know 
        
                    
             
        
        
        
Answer:
x=3.5
Step-by-step explanation:
1. Multiply 
18x-12=5x+30
2.  Move the x's to one side
12x= 42
3. Isolate the variable by dividing
x=3.5
 
        
             
        
        
        
Answer:
the answer should be x= -7 hope this helps!
 
        
             
        
        
        
Pretty sure it’s 16TXI, hope this helps!