The diameter of a circle is 3.5 inches. What is the circumference of the circle?

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

How far could you drive on 50 gallons of gas

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%