12. In the last four vears, the sales at a pet store have increased by 4.91% (Year 1),5.759 (Year 2),8.12% (Year 3) and 21.60% (Year 4). Calculate the mean percent increase for this store_ Calculate the geometric mean percent increase for this store: From your answers for (a) and (b) above, what can you say about the relationship between geometric mean and arithmetic mean?