What is the sst for the data set (1,,,14)?

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks

Answer pls man im trying to get out of summer school

How is this equation completed? i cannot find any examples in the book.