Question

MEDALS! Please help.

The first four terms of a sequence are shown below:

9, 5, 1, -3

Which of the following functions best defines this sequence?

f(1) = 9, f(n + 1) = f(n) - 4; for n greater than or equal to 1

f(1) = 9, f(n + 1) = f(n) + 4; for n greater than or equal to 1

f(1) = 9, f(n + 1) = f(n) - 5; for n greater than or equal to 1

f(1) = 9, f(n + 1) = f(n) + 5; for n greater than or equal to 1

Answer 1

You are subtracting by 4 in the sequence. There is only one option that will let you subtract by 4. What do you think it is?

Answer 2

A. right?

Answer 3

Correct!

Answer 4

Thank you! :D

Answer 5

Anytime :D