What is the value ok k if x^3+kx^2+7x+5 is divided by x+6 and gives a remember of -1? A. 5 B. -7 C. 7 D. -5

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%