The formula to calculate the Mirror Cost (MC) is:
\[ MC = MS \times CPA \]
Where:
Let's say the mirror size (MS) is 200 in² and the cost per unit area (CPA) is $0.50/in². Using the formula:
\[ MC = 200 \times 0.50 \]
We get:
\[ MC = 100 \, \text{\$} \]
So, the mirror cost is $100.