Question

SOLUTION??
9^x-1=27

Answer 1

ln28/ln9=x

Answer 2

well rewrite 9 in terms of 3

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

using the power of a power law it can be written as

\[3^{2x -2} = 3^3\]

now just equate the powers

2x - 2 = 3

solve for x

Answer 3

@Swati19 i think the equation is

9^(x -1) = 27