Final answer:
The expression 6.6 - 2.1W + (-7.6W) + 2.3 simplifies to -9.7W + 8.9 by combining like terms, specifically the constants and the coefficients of the variable W.
Step-by-step explanation:
The student asked to simplify the expression: 6.6 - 2.1W + (-7.6W) + 2.3. To simplify this expression, you should combine like terms.
- First, combine the constant terms (numbers without variables): 6.6 + 2.3 = 8.9.
- Next, combine the coefficients of W: -2.1W - 7.6W = -9.7W.
Therefore, the simplified expression is -9.7W + 8.9, which corresponds to option b in the multiple-choice answers provided.