Remark
You have to assume all thirteen rooms are in the same building, otherwise the question is unanswerable.
Givens
Visit = V = 67 dollars.
Charge/room = C = 30 dollars / Room.
Total = T = ??
Number of rooms = N = 13 rooms
Formula
T = V + C * N
Solve
T = 67 + 30 * 13
T = 67 + 390
T = 457 dollars. Answer