Question

What is the solution to the equation 9^(x – 1) = 27 ?

Answer 1

it cant be 4, i already checked

Answer 2

x = 2.5

x = 0.5

x = –0.5

x = –3.5

has to be one of these 4 choices

Answer 3

it is

Answer 4

rewrite it

\[(3^2)^{x - 1} = 3^3\]

looking at the powers

2x - 2 = 3

2x = 5
x = 5/2

Answer 5

i got it now, thanks guys!