Estimate: mid
Explanation: 4 out of 7 operations are arithmetic operations. Looking at the outermost loop, there are 3 arithmetic operations:

1. Computing an address (adding i to image base address)
2. Dividing image[i] by 255
3. Computing an address (adding i to image2 base address)
4. Increment the loop counter.

The remainder of the operations are 2 loads, the loop conditional and the exp.