Hi can someone please help me with this question

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%

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42

What is the value of x? enter your answer in the box.