Hello! I have a few questions from my maths book that I'm really struggling to understand.. please help! ab

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%

One hectometer is a) 1/1000 of a meter. b) 1/100 of a meter. c) 10 meters. d) 100 meters. e) 1000 meters.

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.