Which statement best describes the graph

Graph the equation. select integers for x

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')

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?