Answer :

To find \( f(8) \) given the function \( f(x) = 2(x - 5) \), follow these steps:

1. Identify the given function:
[tex]\[ f(x) = 2(x - 5) \][/tex]

2. Substitute \( x = 8 \) into the function:
[tex]\[ f(8) = 2(8 - 5) \][/tex]

3. Perform the operation inside the parentheses first:
[tex]\[ 8 - 5 = 3 \][/tex]

4. Now multiply the result by 2:
[tex]\[ 2 \times 3 = 6 \][/tex]

Thus, \( f(8) = 6 \). Therefore, the correct answer is:
[tex]\[ 6 \][/tex]