6. Function P represents the number of people in the gym on a Monday as a function of hours since the gym opened. The gym is open from 5:30 am to 8:30 pm, and the peak number of customers is 90.
Based on the situation, which domain and range make sense for function P?
a. Domain: all numbers from 0 to 90. Range: all numbers from 0 to 15.
b. Domain: all numbers only from 0 to 90. Range: whole numbers only from 0 to 15.
C. Domain: all numbers from 0 to 15. Range: whole numbers only from 0 to 90.
d. Domain:whole numbers only from 0 to 15. Range: all numbers from 0 to 90.