For breakfast, bill had a bacon, egg, and cheese biscuit and two hotcakes totaling 660 calories. phil had a bacon, egg, and cheese biscuit and three hotcakes totaling 780 calories. how many calories are in one hotcake? one bacon, egg, and cheese biscuit?

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%