Question #N669
What is the value of $x$ in the equation $2^{x+1} = 8$?
A. 1
B. 2
C. 3
D. 4
Correct Answer is: B
Since 8 is equal to 2 cubed (2 x 2 x 2 = 8), we can rewrite the equation as 2^(x + 1) = 2^3. Since the bases are the same, the exponents must be equal: x + 1 = 3. Subtracting 1 from both sides gives x = 2.