Question

Last quick question..please help! Solve 4 (^x + 7) = (^6x – 1). The options are:
x ≈ 0.04
x ≈ 28.35
x ≈ 19.51
x ≈ 0.05

Answer 1

I don't understand the other side. What is 6x-1 being raised to?

Answer 2

OOPS sorry : 4(^x+7) = 6(^x-1).

Answer 3

(x+7) * ln(4) = (x-1) * ln(6)
x * ln(4) - x * ln(6) = -ln(6) - 7*ln(4)
x (ln(4)-ln(6)) = (-ln(6) - 7*ln(4))
x = (-ln(6)-7*ln(4))/(ln(4)-ln(6))

Answer 4

you should write 4^(x+7) = 6^(x-1)
just to be clear ^=‘to the power of’

Answer 5

ok,sry

Answer 6

what answer did u get???

Answer 7

Again, you got to do the calculation. I don't have a scientific calculator on my mac.

Answer 8

i got 28.35!! :)

Answer 9

THANKS

Answer 10

http://lmgtfy.com/?q=%28-ln%286%29-7*ln%284%29%29%2F%28ln%284%29-ln%286%29%29

Answer 11

Sounds about right.