Part B: Ms. Lucci asks four other students (Samantha, Jerry, Nadia, and Joseph) to generate expressions that are equivalent to Maria’s expression.
1. Samantha’s expression: 4s + 4
2. Jerry’s expression: 4(s + 1)
3. Nadia says the correct expression is 4s + 1
4. Joseph writes: 2s + 2(s + 2)
How many of the students wrote a correct or an incorrect expression? Justify your answer with a detailed explanation.