Question

A sequence is defined by the recursive function f(n + 1) = –10f(n).

Answer 1

We are given

$f(n+1)=-10f(n)$

we are given

$f(1)=1$

At n=1:

we can plug n=1 into formula

$f(1+1)=-10f(1)$

$f(2)=-10f(1)$

$f(2)=-10*1$

$f(2)=-10$

At n=2:

we can plug n=2 into formula

$f(2+1)=-10f(2)$

$f(3)=-10f(2)$

$f(3)=-10*-10$

$f(3)=100$................Answer

Answer 2

The answer is C - 100