What?? I thought we were trying to answer math questions

Kara was out jogging and, despite being tired, decided to run one more mile. based on her actions, economists would conclude that kara:

Based on an annual disposable income of $40,000, calculate the average amount o money a person would save in japan; in the united states; in france.

The purpose of safety stock is to: a. eliminate the possibility of a stockout. b. control the likelihood of a stockout due to variable demand and/or lead time. c. eliminate the likelihood of a stockout due to erroneous inventory tally. d. protect the firm from a sudden decrease in demand. e. replace failed units with good ones.