Answer: The answer is c = t - 18 × 8.
Step-by-step explanation: Given that Tyrone have his snacks from his bag full of candies. Each time he snacks, he take out 8 candies. After having 18 snacks, we need to write the function formula for "c", the number of candies remaining in the bag, which is a function of 18.
Let 'T' be the total number of candies in the bag. So, after having 18 snacks, number of candies Tyrone ate is = 18 × 8.
Therefore, the number of candies remaining in the bag 'c' will be given by

Thus, the formula is c = T - 18 × 8.