To calculate the monthly cost of Antwan's phone plan based on the number of phone lines, we can use the formula:
Total Cost = Flat Cost + (Cost per Line × Number of Lines)
Given that the flat cost is $50.00 per month and each additional phone line costs $20.00, the formula can be expressed as:
Total Cost = 50 + 20 × (Number of Lines)
Now, let's calculate the costs for different numbers of phone lines:
- For 0 lines: Total Cost = 50 + 20 × 0 = 50
- For 1 line: Total Cost = 50 + 20 × 1 = 70
- For 2 lines: Total Cost = 50 + 20 × 2 = 90
- For 3 lines: Total Cost = 50 + 20 × 3 = 110
- For 4 lines: Total Cost = 50 + 20 × 4 = 130
Now we can see which table matches our calculated values:
- Table 1:
- 0 lines: 20
- 1 line: 40
- 2 lines: 60
- 3 lines: 80
- 4 lines: 100
This table does not match.
- Table 2:
- 0 lines: 20
- 1 line: 40
- 2 lines: 60
- 3 lines: 80
- 4 lines: 100
This table does not match.
- Table 3:
- 0 lines: 50
- 1 line: 70
- 2 lines: 90
- 3 lines: 110
- 4 lines: 130
This table matches our calculated values.
- Table 4:
- 1 line: 20
- 2 lines: 40
- 3 lines: 60
- 4 lines: 80
- 5 lines: 100
This table does not match.
Therefore, the correct table that displays the monthly cost of the phone plan based on the number of phone lines is Table 3:
| Number of Phone Lines | Cost of the Plan ($) | |-----------------------|----------------------| | 0 | 50 | | 1 | 70 | | 2 | 90 | | 3 | 110 | | 4 | 130 |