a. Based on the graph, we can see that in the month of January, March, and April, the sales at the South Location were less than $13,000 while for the North Location, it only happened in January.
Since the question states "either-or", meaning any of the two locations, we can see that the sales at either of the location were less than $13, 000 for 3 months (January, March, and April).
b. Based on the graph, the total sales that the South location had in April is $11,000. If there were 550 customers during that month, to get the average amount each customer spent, simply divide the sales by the number of customers.
Therefore, each customer at the South Location in April spent an average of $20.
c. If their estimated average monthly sale is $14, 000, then to get the estimated total sale for the whole year, we will multiply 14,000 by 12.
Hence, the estimated sales will be between $160,000 and $180,000 for the whole year in the North Location.