Final answer:
To find the expanded form of the expression 2×(3c+9), you multiply each term inside parentheses by 2, resulting in 6c + 18. Therefore, the correct answer is D. 6c+18.
Step-by-step explanation:
The question requires us to expand the expression 2×(3c+9). To do this, we multiply each term inside the parenthesis by the number outside the parenthesis:
- Multiply 2 by 3c to get 6c.
- Multiply 2 by 9 to get 18.
So, the expanded form of the expression is 6c + 18.
The correct answer is D. 6c+18.