The Sine Function The average number of customers per day at a home improvement store is given in the following table. The sine regression equation was found to be y = 33.690 sin(0.887 x + 1.337) + 81.684, where x represents the day where 1 = Sun of the week, 7 = Sat of the first week, 8 = Sun of the second week, and 14 = Sat of the second week.
Use this model to predict the average number of customers on Thursday. Round to the nearest customer.

a. 72
b. 65
c. 70
d. 64

Please select the best answer from the choices provided