Raymond works for a pharmaceutical company that is testing the effectiveness of a new medication. He gave one of the study participants 400 milligrams of the medication, and he knows the amount remaining in the participant's body will decrease by a factor of 1/3 each hour.
Write an exponential equation in the form y = a(b) that can model the amount of
medication, y, remaining in the participant's body after x hours.
Use whole numbers, decimals, or simplified fractions for the values of a and b.
