How many unit angles does the smaller angle of a tan pattern block turn through

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%

Measures of the angle of r, 31 s (x+4) t (3x+9)

W-16=-12 solve each one step equation plz