Answer:
a. A customer earns 1 free night per 10 nights stayed.
Step-by-step explanation:
The missing function is:
f(x) = x/10
The missing options are:
a. A customer earns 1 free night per 10 nights stayed.
b. A customer starts with 1 free night and then earns another free night after every 10 nights stayed.
c.A customer earns x – 10 free nights for every 10 nights stayed.
d. A customer earns 10 free nights after x number of nights stayed.
The function means that after a customer stayed 10 nights, a free night is earned. That is, replacing x = 10 into the function, we get:
f(10) = 10/10 = 1
which means 10 nights are equivalent to 1 free night.
