Final answer:
To simplify 4r + 1 + 2, you combine the constants to get 3 and then add this to the 4r term, resulting in the expression 4r + 3. None of the provided answer options match this simplification.
Step-by-step explanation:
The question asks which option correctly simplifies the expression 4r + 1 + 2. To simplify the expression, you need to combine like terms. In this case, the 1 and the 2 are like terms because they are both constants (numbers without variables).
Here is the simplification step by step:
- Add 1 + 2 to get 3.
- Combine with the term 4r, which remains unchanged because there are no other 'r' terms to combine it with.
- The simplified expression is 4r + 3.
None of the options provided (A, B, C, or D) match the correct simplification, so the answer must indicate that the correct simplification is not listed.