I need help solving for D

Beth Zion Hospital has received initial certification from the state of California to become a center for liver transplants. The hospital, however, must complete its first 18 transplants under great serutiny and at no cost to the patients. The very first transplant, just completed, required 28 hours. On the basis of research at the hospital, Beth Zion estimates that it will have an 80% learning curve. Using estimate the time it will take to complete: a) the 5 th transplant 16.68 hours (round your response to two decimal piaces). b) the first 5 transplants 104.65 hours (round your response to two decimal piaces). c) the 18th transplant hours (round your response to two decimal piaces). d) the first 18 transplants hours (round your response to two decimal piaces). Learning Curve Coefficients