1. The problem asks for an expression representing the total number of marbles in 8 bags, each containing $v$ marbles. 2. To find the total number of marbles, we multiply the number of marbles in one bag by the number of bags. 3. The formula used is: $$\text{Total marbles} = \text{number of bags} \times \text{marbles per bag}$$ 4. Substituting the values, we get: $$\text{Total marbles} = 8 \times v$$ 5. Therefore, the expression for the total number of marbles in 8 bags is: $$8v$$ This means if each bag has $v$ marbles, 8 such bags will have $8v$ marbles in total.