14. Akali is the only nurse in Ionia. Ionia has 21 ninja households distributed one-tenth of a mile along the main street. Each ninja household goes to see Akali for her services at most one time per week. There are additional dangers on the street going there-and back again which are equal to $0.5 for every tenth of the mile. The reservation price of each ninja to pay for Akali services is $10. To serve each ninja, Akali incurs $2 costs. What the maximum price should Akali charge if she wants to serve the whole Ionia? How much would she earn