Answer:
![y = 25 + 6x](https://img.qammunity.org/2021/formulas/mathematics/college/r9ep9tkk9osg51rs8nipts1mdfkcjntk3l.png)
Explanation:
The given options are not in anyway related to the question. So, I will do away with them.
Given
![Set-up\ Fee = \$25](https://img.qammunity.org/2021/formulas/mathematics/college/k7rjplkxh57xh01lqx8cqm02qkqluiibny.png)
![Per\ Shirt = \$6](https://img.qammunity.org/2021/formulas/mathematics/college/29xdr7gfa5jp1fcq5wd8hahninf89pwwcl.png)
Required
Determine the linear relationship
Let
y represents the total cost
x represents the number of shirts
The relationship between x and y is:
![y = Setup\ Fee + Amount\ Per\ Shirt * x](https://img.qammunity.org/2021/formulas/mathematics/college/bu6uz1pu8t9qzf18ol1o5e4z9bn3qav1u1.png)
This gives:
![y = 25 + 6* x](https://img.qammunity.org/2021/formulas/mathematics/college/wzvf1o3sw2aqct07m8jm3z08cpksro95v2.png)
![y = 25 + 6x](https://img.qammunity.org/2021/formulas/mathematics/college/r9ep9tkk9osg51rs8nipts1mdfkcjntk3l.png)