Clara is taking a medicine for a common cold. the table below shows the amount of medicine f(t), in mg, that was present in clara's body after time t: t (hours) 1 2 3 4 5 f(t) (mg) 236.5 223.73 211.65 200.22 189.41 heidi was administered 300 mg of the same medicine. the amount of medicine in her body f(t) after time t is shown by the equation below: f(t) = 300(0.946)t which statement best describes the rate at which clara's and heidi's bodies eliminated the medicine?