Exercise 7-11 These are selected 2017 transactions for Swifty Corporation: Jan. Purchased a copyright for $122,750. The copyright has a useful life of 5 years and a 1 remaining legal life of 30 years. Mar. Purchased a patent with an estimated useful life of 4 years and a legal life of 26 years for $51,120. Sept. Purchased a small company and recorded goodwill of $154,200. Its useful life is 1 indefinite. Indicate the amount of amortization expense on December 31, 2017, for Swifty Corporation. Amortization expense