Answer:
Explanation:
A. The optimal decrease in price to gain the maximum profit in sale:
Meaning if you reduce the price by $2.5, you will gain the maximum profit of $2531.25
B. It represents the amount of profit without any change in the current price on the t-shirt.
By shifting and expanding the original equation
![y=-x^(2)\\](https://img.qammunity.org/2022/formulas/mathematics/college/pezwztvers8y01x89jebtugpt85ssnjczj.png)
![y = -5(x-2.5)^(2) + 2531.25](https://img.qammunity.org/2022/formulas/mathematics/college/kwp6644dct09gx6is2h87t9exymb3u9gw4.png)
![x = 0 => y = 2500](https://img.qammunity.org/2022/formulas/mathematics/college/pqfphh2ecgjilic2d3gu7ytdxal0u4y959.png)
C. The solution is as in part B
It represents by reducing the price of each t-shirt, there is an initial increase in profit but eventually it will drop.