Joe dropped a stick from a bridge approximately 576 feet above the water. how many seconds did it take for it to hit the water? equation: y=-16t^2+h. h= height. seconds = y=0

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%