The equation for this problem is would be 3 + (1/(x-4)^2)

This is the problem:

The limit of r(x) as x approaches infinity is 3. How large would you have to keep x in order for r(x) to be within 0.01 unit of 3? How large would you have to keep x in order for r(x) to be within epsilon units of 3 where epsilon is a small positive number.

Please can someone help me solve it step by step.