Answer:
A. 3x +3
B. 10x + 4
C. 30x - 50
D. -12x - 21
Explanation:
A. 3(x + 1)
1. Multiply 3 times x = 3x
2. Multiply 3 times 1 = 3
3. Put them together 3x + 3
4. Repeat process for other problems.
Let me know if you have any other questions :)
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