Berringer Designs Hired a Graphic Artist

Multiple Choice

Berringer Designs hired a graphic artist.It is estimated that the artist's learning rate is at 70% and her first quarter's output amounted to 300 relatively equal job outputs, which took her a total of 50 hours to complete.Output is expected to double in every succeeding quarter. By the 5th quarter, based on learning curve estimates, what should the artist's average time (in hours) be for the units of output?

A) 17.15 hours.
B) 3.5 hours.
C) 12.005 hours.
D) 6.9 hours.
E) None of the answers is correct.