Answer: 1) 25b   2) ac   3)ba
1) Since b is unknown, your answer will be 25b
2) Since both variables, a and c, are unknown, your answer will be ac
3) Since both are unknown here, it will be ba!
 
        
             
        
        
        
Answer with Step-by-step explanation:
 We are given that 
The probability that an American CEO can transact business in  foreign language=0.20
The probability than an American CEO can not transact business in foreign language=
Total number of American CEOs  chosen=12
a. The probability that none can transact business in a foreign language=
Using binomial theorem 
The probability that none can transact business in a foreign language=
b.The probability that at least two can transact business in a foreign language=
c.The probability that all 12 can transact business in a foreign language=
The probability that all 12 can transact business in a foreign language=
 
        
             
        
        
        
c. t = 18h
is the appropriate expression for t equals 18 times h.
        
                    
             
        
        
        
The vertex at (1,2) and from there use this to make the graph.
over 1, up 1. over 2 up 4, over 3 up 9. and if you know its right side, you know its left side too.