(1 point) A cup of coffee contains 110 mg of caffeine, which leaves the body at a continuous rate of 18% per hour. a) Write a formula for the amount, A mg, of caffeine in the body t hours after drinking a cup of coffee: A(t) = 110e^-0.18^t b) A graph could be drawn to estimate the half-life of caffeine. Use logarithms to find the half-life of caffeine: 3.851 hours Note: You can earn partial credit on this problem. Entered Answer Preview Result 110*(e^[-(0.18^t)]) 110e -0.18' incorrect 3.851 3.851 correct