Which of the following numbers is not an integer?
A -3
B 0
C .5
D 2^5
E none of these

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%

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities