The reciprocal of a fraction less than 1 is always a fraction greater then 1. why is this

Carl's candies has determined that a candy bar measuring 3 inches long has a z-score of +1 and a candy bar measuring 3.75 inches long has a z-score of +2. what is the standard deviation of the length of candy bars produced at carl's candies?

What is the value of 4x to the third +4x if x is 4

1.5x + 0.2y = 2.68 1.6x +0.3y = 2.98 which statement describes the graph of the system of equations