Answer: The total cost ($)
Explanation:
Hi, the correct expression is 0.99c+ 0.79a.
This expression represents the total cost for Erin, because the terms are the price of each product (for example cucumber= $0.99) multiplied by the number of products bought (c = number of cucumbers).
Each term equals to the cost of buying a certain quantity of each product, if we add both terms, we obtain the total cost.
Total cost = 0.99c+ 0.79a.
Feel free to ask for more if needed or if you did not understand something.