4
Answer: BSet 3: Exponential Functions (Advanced)
Explanation
PROBLEM
Recent studies show that simplify: 4 to the power of (-2). Express as a fraction 1/n.
Simplify: 4 to the power of (-2). Express as a fraction 1/n.
A.
16
B.✓ Correct
1/16
C.
1/17
D.
1/15
Detailed Explanation
[Variation 1] Choice B is the best answer. 4 to the power of (-2) = 1/4 to the power of 2 = 1/16
Why others are wrong:
A: 16 is incorrect because it does not satisfy the equation.
C: 1/17 is incorrect because it does not satisfy the equation.
D: 1/15 is incorrect because it does not satisfy the equation.