A school cafeteria is stocking up on snacks for the week. The table below shows the price per unit for three different snacks.
| Snack type | Price per unit ($) |
|---|---|
| Apple | 0.75 |
| Banana | 0.50 |
| Granola Bar | 1.25 |
The equation represents the total cost, , in dollars, for purchasing apples, bananas, and some granola bars. All three snack types are purchased. Which of the following is the best interpretation of in this context?
The total number of granola bars purchased
The cost of all the granola bars purchased
The price of one granola bar
The total cost of apples and bananas
