Sonic Corporation purchased and installed electronic payment equipment at its drive-in restaurants in San Marcos, TX at a cost of $54,000. This equipment has an estimated residual value of $3000. The equipment is expected to process 255,000 payments over its three year useful life. Per year, expected payment transactions are 61,200 in year #1; 140,250 in year #2 and 53,550 in year #3.