Answer:

Step-by-step explanation:
Given

Required
Write a recursive expression

When n = 1


When n = 2

can be rewritten as

Substitute 3 for f(1)

Express 1 as 2 - 1
----- (1)
When n = 3

can be rewritten as

Substitute 8 for f(2)

Express 2 as 3 - 1
------ (2)
Write out (1) and (2)


Replace 2 and 3 with n in both cases; This gives

Hence;
The recursive is 
Three hundred four million nine hundred sixty seven thousand
27 and 90 can both be divided by 9
27 divided by 9 = 3
90 divided by 3= 10
so your answer is 3 over 10
Answer:
C
Step-by-step explanation:
Given
3
= 24 ( divide both sides by 3 )
= 8
Raise both sides to the power of 
x + 9 =
=
=
= 16 ( subtract 9 from both sides )
x = 7 → C
Answer:
0
Step-by-step explanation:
Put -6 where x is and do the arithmetic.
f(-6) = 1/3 (-6 +6) = 1/3 (0)
f(-6) = 0