Respuesta :
Input: 4, 6, 8
Output: 8, 10, 12
8-4 = 4
10-6 = 4
12 - 8 = 4
The rule is add 4 to the input.
The answer is A.
Let's build a table for each option: if the inputs are 4, 6 and 8, adding four to each of these leads to
[tex]\begin{array}{c|c}\text{in}&\text{out}\\4&8\\6&10\\8&12\end{array}[/tex]
Subtract 4 gives
[tex]\begin{array}{c|c}\text{in}&\text{out}\\4&0\\6&2\\8&4\end{array}[/tex]
Dividing by 2 gives
[tex]\begin{array}{c|c}\text{in}&\text{out}\\4&2\\6&3\\8&4\end{array}[/tex]
Multiplying by 2 gives
[tex]\begin{array}{c|c}\text{in}&\text{out}\\4&8\\6&12\\8&16\end{array}[/tex]
So, as you can see, the only way to obtain the desired outputs is "add 4"