We have given

and

. Fifth term is

. It means we need to find

and in order to find the latter, we have to find

,

and

. Since we know the value of

, beginning from the last equation we can find the value of

. We can write that

,

and

. Since

, then
Answer:
9
Step-by-step explanation:
i hope this helps!
any combination would work out. the most common is x and y. or you may use f(x) and x.
Hehe i hope it can help you
You've answered this yourself hong would wake up at 8:35