Nina put her toy car collection into 8 groups with 4 cars in each group, but there were 3 cars left over. Write an expression using the numbers 8, 4, and 3, the symbols x (or .) and +, and parentheses, if needed, for the total number of toy cars in Nina's collection. If you use parentheses, explain why you need them; if you do not use parentheses, explain why you do not need them