What is your zodiac sign

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%

Need on this one asap im almost done with this subject

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?