Which two lines are parallel 5y = -4x-5
Sy = 5+ 2x
5y + 4x = -1

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%