Billy made 400 points to become a level seven on battlefield if he is completed 3/5 of what he needs so far how many points does he still need

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%