Me write a expression~
write a rule so that for every input, the output is an even number!

Answer with explanation:

A Rule which expresses that for every input, the output is an even number can be written in many ways

f(x)=2 x , where x is any Integer.

f(n)=4n,  where n is any Integer.

f(s)=6s,  where s is any Integer.

f(k)=8k,  where k is any Integer.

There can be many more expressions.

In these expressions,if you replace,x ,n,s and ,k by any integer , the result will be an Even Number(Positive Even Number or Negative Even Number).

first one because it can't have a fraction in it

step-by-step explanation: