Question

im working on a review for a test and i need someone to work the problem out and explain it to me
A(n) = -2 ● 3^n – 1

Answer 1

the black dot implies multiplication am I right?

Answer 2

yes

Answer 3

well the A in this simply implies to be a function

Answer 4

usual cases are, when they say f(x) where x could be just about anything

Answer 5

the answer is -2,-18,-486

Answer 6

i need someone to explain how that answer was gotten

Answer 7

this requires log actually

Answer 8

@Kainui

Answer 9

Hmmm well it doesn't appear to be a question, just a function so I don't really know what to say.

Answer 10

if it's like

-2 ● 3^n – 1 = -18

I think we can solve for n in that case

Answer 11

please but brackets in proper places for htis stuff

Answer 12

it is
-2*3^(n-1) according to your solution

Answer 13

yes - the answers you gave are the values of the function A for n =1 , 3 and 5