Dr. Hunt just got his PhD, and he wants to print copies of his thesis in hardcover book format. He could use Wildgrove Printing, paying a setup fee of $38 and $6 for every book printed. Alternately, he could go through Salem University, paying an up-front fee of $36 and $7 per book. It turns out that, given the number of books Dr. Hunt wants to print, the two options cost the same amount. How many books is that? What is the amount?