Solution:
P = 5 - (q/2)
P = 5 - 0.5q
MC = 1
In two-part pricing, the monopolist equates the hourly rate (p) with MC:
5 - 0.5q = 1
0.5q = 4
q = 8
p = MC = $1
Total monthly access fee equals entire consumer surplus (CS).
From demand function, when q = 0, p = $5 (Reservation price)
Monthly Access fee = CS = Area between demand curve and market price = (1/2) x $(5 - 1) x 8 = 4 $4 = $16