Answer:
for 18 x is 6 and for 20 it is 11
Step-by-step explanation:
For 18, since -1+2x and 5+x is the same thing, set up and equation. WE can simplify to -1+x=5 and then we get x=6 
For 20, 18 is 11 since 18=-4+2x. If we simplify we get 22=2x then we can use algebra to say that x=11
Hope this helps :)
 
        
                    
             
        
        
        
Either it is C or D or E.
        
             
        
        
        
Feet
_____
second
10 feet
________
16 second 
equals
.625 feet per second
        
             
        
        
        
Answer:
How you make predictions is by finding the ratio of the number of times an event occurs to the total number of trials.
Step-by-step explanation: