To solve the expression \(-30 + 4.5\), we should first interpret \(-30\) correctly. The notation you are using seems to suggest that \(-30\) refers to \(−3 \times 10\), but that is not the case in standard arithmetic.
The correct approach is simply treating \(-30\) as it is. So:
- Start with the expression: \(-30 + 4.5\).
- This is the same as \(-30 + 4.5 = -30 + 4.5\).
- The calculation involves understanding that \(-30\) is far less than \(4.5\).
- The result is \(-25.5\) (since \(-30 + 4.5\) yields \(-25.5\)).
Now, let's evaluate the responses given:
- Response 1: Incorrect. This incorrectly uses exponentiation and evaluates as if it were a different expression.
- Response 2: Incorrect. This also misinterprets \(-30\) as it uses exponentiation incorrectly.
- Response 3: Correct arithmetic but written incorrectly if it's labeling \(-30\) as \(-3\).
- Response 4: Incorrect. This similarly misinterprets the negative sign and uses multiplication incorrectly.
All the options show incorrect ways to interpret \(-30 + 4.5\). The most appropriate approach to obtain the correct arithmetic would simply be \(-30 + 4.5 = -25.5\). Thus, none of the provided responses are correct.