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

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

anonymous · Answer

the black dot implies multiplication am I right?

anonymous · Answer

yes

anonymous · Answer

well the A in this simply implies to be a function

anonymous · Answer

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

anonymous · Answer

the answer is -2,-18,-486

anonymous · Answer

i need someone to explain how that answer was gotten

anonymous · Answer

this requires log actually

anonymous · Answer

@Kainui

kainui · Answer

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

anonymous · Answer

if it's like

-2 ● 3^n – 1 = -18

I think we can solve for n in that case

dan815 · Answer

please but brackets in proper places for htis stuff

dan815 · Answer

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

welshfella · Answer

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