Solve the proportion. the quantity 13 minus b end of quantity divided by 6 equals the quantity 2 minus 0.5 multiplied by b end of quantity divided by 4. a. 40 b. 32 c. 64 d. 72

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%