7
Answer: BSet 1: Exponential Functions (Beginner)
Explanation
PROBLEM
Solve for x: 3 to the power of x = 81
Solve for x: 3 to the power of x = 81
A.
3
B.✓ Correct
4
C.
2
D.
2
Detailed Explanation
Choice B is the best answer. 3 to the power of 4 = 81, so x = 4
Why others are wrong:
A: 3 is incorrect because it does not satisfy the equation.
C: 2 is incorrect because it does not satisfy the equation.
D: 2 is incorrect because it does not satisfy the equation.