Beth Zion Hospital had received initial certification from the state California to become a center for liver transplants. The hospital, however, must complete its first 18 transplants under great scrutiny and at no cost to the patients. The very first transplant, just completed, required 30 hrs. On the basis of research at the hospital, Beth Zion estimates that it will have an 80% learning curve. Estimate thr time it will take to complete:
a. the 5th liver transplant
b. all the first 5 transplants
c. the 18th transplants
d. all the 18th transplants