Question

The table below shows the cost for an online subscription membership with an initial start-up fee charged in the first month.
Number of Months cost($)
1. 40.
2. 60.
3. 80.
the cost per month is $___.
the initial cost is $_____.

Answer 1

To find the monthly cost and the initial cost using the provided data:

1. **Initial Cost**: This is the fee charged in the first month. Based on the data:
- For 1 month, the cost is $40, which means the initial cost is $40.
- For 2 months, the cost is $60. Since the initial cost is included in the first month, the second month would cost $20.
- For 3 months, the cost is $80. Similarly, the second and third months combined would also indicate a monthly rate of $20.

From these calculations, we can derive:

- The **initial cost** is **$40**.
- The **monthly cost** (after the first month) can be calculated as follows:
- For 2 months: \( \text{Total} - \text{Initial} = 60 - 40 = 20 \)
- For 3 months: \( \text{Total} - \text{Initial} = 80 - 40 = 40 \)
- Dividing the total cost of the subscription (after the initial month) gives the monthly cost.

Thus, the answers are:
- The cost per month is **$20**.
- The initial cost is **$40**.