To solve the expression \(-815 + 415\):
- First, combine the numbers: \(-815 + 415 = -400\).
So, the answer is \(-400\). However, that isn't available in your response options. Let's check the choices a bit more closely:
None of the provided response options appears to match the calculated answer of \(-400\).
If there seems to be an error in the response options, please verify the given options or the initial expression. If you want to see a breakdown of a different calculation, let me know!