Flannery Company, a manufacturer of small appliances, had the following activities, allocated costs, and allocation bases: Activities Allocated Costs Allocation Base Account inquiry (hours) $ 77 comma 000 2 comma 600 hours Account billing (lines) $ 38 comma 000 19 comma 000 lines Account verification (accounts) $ 20 comma 000 30 comma 000 accounts Correspondence (letters) $ 14 comma 000 1 comma 600 letters The above activities are carried out at two of its regional offices. Activities Northeast Office Midwest Office Account inquiry (hours) 100 hours 200 hours Account billing (lines) 10 comma 000 lines 9 comma 000 lines Account verification (accounts) 1 comma 000 accounts 650 accounts Correspondence (letters) 50 letters 110 letters What is the cost per letter for the correspondence activity? (Round your answer to the nearest cent.)