Question

@TheSmartOne

Answer 1

A sequence has its first term equal to 3, and each term of the sequence is obtained by adding 5 to the previous term. If f(n) represents the nth term of the sequence, which of the following recursive functions best defines this sequence?

f(1) = 3 and f(n) = f(n - 1) + 5; n > 1
f(1) = 5 and f(n) = f(n - 1) + 3; n > 1
f(1) = 3 and f(n) = f(n - 1) + 5n; n > 1
f(1) = 5 and f(n) = f(n - 1) + 3n; n > 1

Answer 2

d?

Answer 3

@iambatman

Answer 4

That's a bad guess

Answer 5

What does this mean
`A sequence has its first term equal to 3`

Answer 6

We can eliminate two choices by knowing just that

Answer 7

Are you there?

Answer 8

the first term is f(1)
So it's saying f(1) = 3, so we can eliminate any with f(1) = 5 right away, and now we know that f(n) represents the nth term of the sequence, and each term of the sequence is obtained by adding 5 to the previous term. So by knowing just `each term of the sequence is obtained by adding 5 to the previous term` we can eliminate another option, hint: why would you multiply 5 by n, does that even make sense? Plug some numbers and see what's going on.