An athlete trains on a circular track of radius 40 m and jogs 10 laps each day, 5 days a week. how far does he jog each week? round the answer to the nearest whole number of metres.

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean

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%