Question

PLS NEED HELP ASAP!

8 = 2^ x + 4

X = -4
X = -1
X = 0
X = 7

Answer 1

If the equation is the first one then none of those answers are correct but the second one do have a correct answer (B)

x = - 1

Explanation:

*Look at the picture *

Answer 2

Explanation:

The given expression is

8 = 2^x + 4

The first step is to subtract 4 from the left hand side and the right hand side of the equation. It becomes

8 - 4 = 2^x + 4 - 4

4 = 2^x

The next step is to express 4 on the left hand side of the equation in powers of 2. It becomes

2^2 = 2^x

Since the two bases on the left hand side and the right hand side of the equation are equal, then the powers can be equated. Therefore

x = 2