Question

help?


Solve 8^x - 2 = 3
x ≈ 2.52
x ≈ 0.26
x ≈ 2.74
x ≈ 0.40

Answer 1

Hello.

\[8^x - 2 = 3 \rightarrow 8^x = 5\]
Now just take the root of 8 to solve.

Answer 2

c?

Answer 3

are you sure those are the correct answer choices?

Answer 4

yes

Answer 5

x should be something like .77 though...

Answer 6

wait, I think you got the question wrong..kind of. its 8^(x - 2 )= 3

Answer 7

ooo..

Answer 8

so?

Answer 9

8(2.52 - 2) ≈ 3

Answer 10

so how do I do it..?

Answer 11

take the log base 8 of both sides

log(base8)8 ^ (x - 2) = x-2
log(base8) 3 = log(3) / log(8)

x - 2 = log(3) / log(8)

x = 2 + log(3) / log(8)

Answer 12

okay..i think im following..

Answer 13

@Compassionate can you help???????

Answer 14

The opposite of 8 to the x is the logarithm of 8. Which is?

Answer 15

I have no idea..

Answer 16

The logaritm of 8 is 2.

Answer 17

oh..

Answer 18

So take it to both sides

log(based: 8) = 5 -(log base 8)

Answer 19

okay

Answer 20

So then we get x = 0.74

Answer 21

yup got it. thanks!