Question

Solve the equation ln(x + 1) - ln(9) = ln(4) + ln(x - 3) for x.

A) 2.86
B) 3.11
C) 3.36
D) 3.61
E) 3.86

Answer 1

use properties of ln:
ln((x+1)/9)=ln(4*(x-3))
so,
(x+1)/9 = 4*(x-3)
simplify & solve for x

Answer 2

x = 13/4

Answer 3

= 3.25

Answer 4

which is none of the answers D:

Answer 5

I got my equation wrong and didn't look at the options first

Answer 6

I got it, its 3.11 :) thanks for the help!