The sales of lawn mowers t years after a particular model is introduced is given by the function y = 5500 In(9t+4), where y is the number of lawn mowers sold. How many mowers will be sold 4 years after a model is introduced? Round your answer to the nearest whole number. Show your work to find the number of mowers for credit.I got a number of 20289, but I was not sure if I am correct.