When u convert 100 feet per second to inches per second, will there be more or less than 100 inches explain

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

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%

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?