HELP!!! WILL FAN AND MEDAL

A sequence is defined recursively using the formula f(n + 1) = f(n) – 5 . Which sequence could be generated using this formula?

A) 1, –5, 25, –125, ...

B) 2, 10, 50, 250, ...

C) 3, –2, –7, –12, ...

D) 4, 9, 14, 19, ...

Question

HELP!!! WILL FAN AND MEDAL

A sequence is defined recursively using the formula f(n + 1) = f(n) – 5 . Which sequence could be generated using this formula?

A) 1, –5, 25, –125, ...

B) 2, 10, 50, 250, ...

C) 3, –2, –7, –12, ...

D) 4, 9, 14, 19, ...

anonymous · Answer

@Conqueror @amistre64 @ganeshie8  @iGreen

igreen · Answer

I believe you plug in the first value and see if it creates the second value.

f(n) - 5

1 - 5 = -4

So the first one is incorrect.

Can you do that with the second one?

anonymous · Answer

i got -3, so thats wrong

anonymous · Answer

ok i tried all of them, i think its c, is that correct?

igreen · Answer

Yep!

igreen · Answer

That looks correct..I'm not good with sequences so I'm not 100% sure.

anonymous · Answer

i got it right! thanks for the help, and im not good at math at all :/