Select the correct answer. Simplify the expression to a single numerical value.

A.
144
B.
432
C.
900
D.
5,184

Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.

Solve the equation x/4 - 5= -8 -27 -12 -7 12

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%