Apply the Distributive Property first to solve the equation below. What operation will you need to use last? If instead, you divide first to solve the equation what operation would you need to use last? 24(d/4 -5)=156

Given this information, which expression must represent the value of b?

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

I’m still confused on how to work the percentages