To determine which candy bar is cheaper per bar, we need to compare the cost per bar for both Candy Bar A and Candy Bar B.
For Candy Bar A: The table shows the costs for different quantities purchased:
- For 1 bar: $1.25 → $1.25 per bar
- For 2 bars: $2.50 → $1.25 per bar
- For 3 bars: $3.75 → $1.25 per bar
- For 4 bars: $5.00 → $1.25 per bar
- For 5 bars: $6.25 → $1.25 per bar
The cost per bar for Candy Bar A remains constant at $1.25 regardless of how many bars are purchased.
For Candy Bar B: The equation for Candy Bar B is \(y = x\), which indicates the cost \(y\) is equal to the quantity \(x\). Therefore, the cost per bar is:
- For 1 bar: $1.00 → $1.00 per bar
- For 2 bars: $2.00 → $1.00 per bar
- For 3 bars: $3.00 → $1.00 per bar
- For 4 bars: $4.00 → $1.00 per bar
- For 5 bars: $5.00 → $1.00 per bar
The cost per bar for Candy Bar B is consistently $1.00, which is cheaper than the $1.25 per bar for Candy Bar A.
Therefore, between Candy Bar A and Candy Bar B, Candy Bar B (with a cost of $1.00 per bar) is cheaper.
The answer is 2 for Candy Bar B.