1. The problem asks to find the value of the function $s(t) = -3t + 8$ at $t = -2$. 2. The formula to evaluate a function at a given input is to substitute the input value into the function expression. 3. Substitute $t = -2$ into the function: $$s(-2) = -3(-2) + 8$$ 4. Simplify the multiplication: $$s(-2) = 6 + 8$$ 5. Add the terms: $$s(-2) = 14$$ 6. Therefore, the value of $s(-2)$ is 14. The correct answer is c. 14.