1. The problem asks to find the value of the expression $-6k + 5$ when $k = -3$. 2. The formula given is $-6k + 5$. We substitute $k$ with $-3$. 3. Substitute: $$-6(-3) + 5$$ 4. Multiply: $$18 + 5$$ 5. Add: $$23$$ 6. Therefore, the value of $-6k + 5$ when $k = -3$ is $23$.