Question

I have no idea how to do this, please, I need the answer asap. (Find the rule. Solve for n.) xxx

Answer 1

rule:

X+X-1=Y

n+n-1=11
2n-1=11
2n=12
n=6

Answer 2

The rule is y= 2x minus one or to get the output, take the input and multiply it by two and add one. We can do this in reverse by adding one to 11 to get 12 and dividing by 2 to get six for n