-----Description-----  
Given an integer x, determine a pair (a, b) where the first element is twice the value of x and the second element is four times the value of x.

-----Input-----  
The input consists of:  
• x: An integer.

-----Output-----  
The output is a tuple (a, b) where:  
• a = 2 * x  
• b = 4 * x

-----Note-----  
There are no additional preconditions; the method is defined for all integers.