To determine which candy bar is cheaper on a per bar basis, we can calculate the cost per bar for Candy Bar A based on the prices given in the table:
- For 1 Candy Bar A: Cost = $1.25; Cost per bar = $1.25/1 = $1.25
- For 2 Candy Bar A: Cost = $2.50; Cost per bar = $2.50/2 = $1.25
- For 3 Candy Bar A: Cost = $3.75; Cost per bar = $3.75/3 = $1.25
- For 4 Candy Bar A: Cost = $5.00; Cost per bar = $5.00/4 = $1.25
- For 5 Candy Bar A: Cost = $6.25; Cost per bar = $6.25/5 = $1.25
From these calculations, we can see that the cost per bar for Candy Bar A is consistently $1.25.
For Candy Bar B, the equation y = x implies that the cost is equal to the quantity (in dollars). Therefore:
- For 1 Candy Bar B: Cost = $1
- For 2 Candy Bar B: Cost = $2
- For 3 Candy Bar B: Cost = $3
- For 4 Candy Bar B: Cost = $4
- For 5 Candy Bar B: Cost = $5
From these calculations, the cost per bar for Candy Bar B is:
- Cost per bar = Cost / Quantity = y/x = $1 each
Now we can summarize the costs per bar:
- Candy Bar A: $1.25 per bar
- Candy Bar B: $1 per bar
Since $1 (Candy Bar B) is less than $1.25 (Candy Bar A), Candy Bar B is the cheapest.
Therefore, the answer is 2 for Candy Bar B.