Statistics question

The problem goes as such;

The scale of scores on an IQ test is approximately Normal with mean 100 and standard deviation 15. The organization MENSA, which calls itself "the high-IQ society," requires an IQ score of 130 or higher for membership. What percent of adults would qualify for membership?

I know I can use the 68-95-99.7 rule, but I am confused at where to begin.

Related Set Theory, Logic, Probability, Statistics News on Phys.org
Wrong section, sorry.

EnumaElish
Homework Helper
The problem goes as such;

The scale of scores on an IQ test is approximately Normal with mean 100 and standard deviation 15. The organization MENSA, which calls itself "the high-IQ society," requires an IQ score of 130 or higher for membership. What percent of adults would qualify for membership?

I know I can use the 68-95-99.7 rule, but I am confused at where to begin.
Can you state the the 68-95-99.7 rule?

You have to standardize first, using Z=X-$$\mu$$$$/$$$$\sigma$$

EnumaElish
$(X-\mu)/\sigma$ is what you must have meant.