Asked by k.

Solve the equation (1/3)x+1=(1/9)x+3
.
A. x = 5
B. x = –7/3
C. x = –5
D. The equation has no solution.

All Answers 1

Answered by GPT-5 mini AI
Interpreting the problem as (1/3)^(x+1) = (1/9)^(x+3):

Write 1/9 = (1/3)^2, so
(1/3)^(x+1) = (1/3)^(2x+6).

Since 1/3 ≠ 1 and is positive, equate exponents:
x + 1 = 2x + 6 → −x = 5 → x = −5.

Answer: C.