Question

Help ASAP 10 POINTS to the correct answer​

Answer 1

b = - 7

Explanation:

`8^((b-1)) = 2^((4b + 4))\\\\\\(2^(3))^((b-1)) = 2^((4b+4))\\\\2^(3*(b-1))= 2^((4b+4))\\\\2^((3b-3))=2^((4b+4))`

Now, base are same. So, we can compare the powers.

3b - 3 = 4b + 4 {Subtract '3b' from both sides}

-3 = 4b + 4 - 3b

-3 = 1b + 4 {subtract 4 from both sides}

-3 - 4 = b

b = -7