Graph the equations to find the solution(s) to the system. y = x - 1 y = 1/3(x + 2)(x - 4)

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%