First, let's calculate the total number of students who are members of the spirit club.
There are 300 students in total, and 20% of them are members of the spirit club: \[ \text{Number of spirit club members} = 300 \times 0.20 = 60 \]
Next, we will calculate the cost per shirt for Company A using the costs provided.
- Company A Costs:
- For 10 shirts, the cost is $145.00
- For 25 shirts, the cost is $362.50
- For 50 shirts, the cost is $752.00
- For 100 shirts, the cost is $1450.00
Let's calculate the cost per shirt for each of these amounts:
- 10 shirts: \[ \text{Cost per shirt} = \frac{145.00}{10} = 14.50 \]
- 25 shirts: \[ \text{Cost per shirt} = \frac{362.50}{25} = 14.50 \]
- 50 shirts: \[ \text{Cost per shirt} = \frac{752.00}{50} = 15.04 \]
- 100 shirts: \[ \text{Cost per shirt} = \frac{1450.00}{100} = 14.50 \]
The cost per shirt for Company A varies, with the most consistent cost being $14.50 for 10, 25, and 100 shirts. The value $15.04 is for 50 shirts.
Next, we need to calculate the cost per shirt for Company B. Without the graph, we can’t provide the specific cost per shirt for that company. However, we need to choose from the provided options based on the calculations we have:
The options presented are:
- $180
- $0.08
- $15.00
- $12.00
Given our calculations for Company A, the most reasonable estimate for the cost per shirt is around $14.50, so the closest one to that is $15.00.
Assuming Company B offers a price close to that, we can suggest:
Cost Per Shirt for Company A: $14.50 (closest option is $15.00)
Since we don't have data for Company B, the best answer for the cost per shirt based on the options provided is $15.00.