Find the length of side x in simplest radical form with a rational denominator.

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%

What is the unit rate of, 75% high fiber chimp food to 25% high protein chimp food.