Posted by Caroline on Wednesday, May 1, 2013 at 12:59am.
34.
4^(3x-7) = 32^x
(2^2)^(3x-7) = (2^5)^x
2^(6x-14) = 2^(5x)
6x - 14 = 5x
x = 14
#31 and #32 are also incorrect, the rest are good
31.
27^(x+1) = 9
(3^3)^(x+1) = 3^2
3^(3x+3) = 3^2
3x+3=2
x = -1/3
32.
125^(x-2)x = 25
(5^3)^(x-2) = 5^2
5^(3x-6) = 5^2
3x-6=2
3x = 8
x = 8/3
Thank you