Answer:
Step-by-step explanation:
[tex]5 \: . \: k - 10c + 8 \\ 5 \: . \: (6) - 10(2) + 8 \\ 5 \: . \: 6 - 20 + 8 \\ 30 - 20 + 8 \\ 10 + 8 \\ 18 \\ [/tex]