Final answer:
To find the value of 2x+3 when x=8, you substitute x with 8 and perform the calculation to get 19, which is option (B).
Step-by-step explanation:
We are asked to evaluate 2x+3 when x=8.
Here are the steps to find the solution:
- Substitute the value of x with 8 into the expression, so it becomes 2(8) + 3.
- Multiply 2 by 8 to get 16.
- Add 3 to 16 to get the final result, which is 19.
Hence, the correct answer to the expression 2x+3 when x=8 is 19, which corresponds to option (B).