When running wires over a long distance, electricians must be concerned with voltage drop. If the drop in voltage amounts to
0.0339 volts per ampere per 100 feet, how much of a drop will there
be for 20 amperes at 350 feet?

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%