The population of foxes in a certain region is estimated to be 91m = 500 + 60 mt?) in month t, and the population of rabbits in the same region in month fis given by 92m = 3000 + 30:) cos (7%). Find the rate of change of the populations when t = 1. (Express a decrease in population as a negative rate of change. Round your answers to one decimal place.) "he rate of change of fox population \\:i "he rate of change of rabbit population :I