Question

Solve 8 = 2x + 4.
X = -4
X=-1
x = 0
X=7

Answer 1

x=-1

Explanation:

i took the test

Answer 2

x = -1

Explanation:

Write it in exponential form, 2^3 = 2^x+4

Since base is the same, Set the exponents equal, 3 = x + 4

Move the terms, variable goes to the left side and change the sign -x + 3 = 4

Subtract and calculate, -x = 1

Change the signs on both sides, x = -1