Table 304 Shows How Many Hairstyling Appointments a Hair Salon Can

Table 30.4 shows how many hairstyling appointments a hair salon can schedule per week based on the number of stylists.In the spaces provided, compute the marginal physical product (MPP) of the hairstylists, total revenue, and the marginal revenue product of the stylists, assuming that a hairstylist
Charges $60 per appointment.In Table 30.4, what is the marginal physical product of the fourth hairstylist?

A) 5,400.
B) 90.
C) 22.5.
D) 0.