A principal of $$4800wa inveted at 6. 25% interet, compounded annually. Let t be the number

A principal of $$4800wa inveted at 6. 25% interet, compounded annually. Let t be the number of year ince the tart of the invetment. Let y be the value of the invetment, in dollar. Write an exponential function howing the relationhip between y and t