Find the value of y if 2^(y + 1) = 64.
Answer and explanation
Correct answer: D. 5
- Step 1: Express 64 as a power of 2: 64 = 2^6, so 2^(y + 1) = 2^6. Step 2. Equate exponents: y + 1 = 6 -> y = 5. Answer: 5. Why not the others: 4 gives 2^5 = 32; 6 gives 2^7 = 128; 7 gives 2^8 = 256.
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