After taking a dose of medication, the amount of medicine remaining in a person's bloodstream, in milligrams, after xx hours can be modeled by the function f, of, x, equals, 110, left parenthesis, 0, point, 9, 1, right parenthesis, to the power x , .f(x)=110(0.91) x . Find and interpret the given function values and determine an appropriate domain for the function. Round your answers to the nearest hundredth.