To find the price per cup of oat milk, we first need to determine how many cups are in the 3-quart container.
Since there are 4 cups in 1 quart, we multiply the number of quarts by the number of cups per quart:
\[ 3 \text{ quarts} \times 4 \text{ cups/quart} = 12 \text{ cups} \]
Now that we know there are 12 cups in the 3-quart container, we can calculate the price per cup by dividing the total cost by the number of cups:
\[ \text{Price per cup} = \frac{\text{Total cost}}{\text{Number of cups}} = \frac{9.48}{12} \]
Now, we perform the division:
\[ \frac{9.48}{12} \approx 0.79 \]
Therefore, the price per cup of oat milk is approximately $0.79.