A normally distributed data set has a mean of 50 and a standard deviation of 10. Which is closest to the percent of values between 40 and 75? А 69% B 82%C 84% D 49% ​

Atreasure chest sinks at a rate no less than 20 feet er second. the floor of the icean is at most at -4,200 feet. will the tresure chest reach the ocean floor in less than 3 minutes? explain.