Question

help me solve this question

and I will mark you as brainliest

Answer 1

the answr is 3 i think do

Answer 2

$= \ \textgreater \ Given : \frac{10}{3} * 3^x - 3^{x - 1} = 81$

It can be written as,

$= \ \textgreater \ \frac{10}{3} * 3^1 * 3^{x - 1} - 3^{x - 1} = 3^4$

$= \ \textgreater \ 3^{x - 1} ( \frac{10}{3} * 3^{1} - 1) = 3^4$

$= \ \textgreater \ 3^{x - 1} (9) = 3^4$

$= \ \textgreater \ 3^{x - 1} * (3^2) = 3^4$

$= \ \textgreater \ 3^{x - 1 + 2} = 3^4$

$= \ \textgreater \ 3^{x + 1} = 3^4$

= > x + 1 = 4

= > x = 4 - 1

= > x = 3.


Therefore, the option is (C) - 3.


Hope this helps!