Answer: B
Explanation:
Let's do each equation to find which has the value of 128. A is 2 to the power of 7 means you multiply 2, 7 times, so 2 times 2 is 4, 4 x 2 = 8, 8 x 2, 16, 16 x 2 = 32, 32 x 2 = 48, and 48 x 2 is 96, so answer A is incorrect. B is 2 times 4 to the power of 3 so 4 x 4 is 16 and 16 x 4 is 64, since I have to multiply that number by 2, I get a total of 128. Well that's the answer so the others are incorrect ( A, C, and D). Hopefully this helps :)