Find the minimum value of the parabola y = x2 + 4x.

What is the quotient of 42/3 divided by 4 1/5

Negative 5 1/12 + negative 4 1/4 + 6 3/4

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%