Answer:

Explanation:
Let the number of sweatshirts purchased be
.
Now, cost for each sweatshirt is $ 9.50.
So, cost for
sweatshirts,

Cost of ink per sweatshirt is $ 5.
So, cost for ink of
sweatshirts,

Cost of 1 bag of sweatshirt is $ 0.20
So, cost of
bags of sweatshirt,

Money spent on rent,

Money spent on electricity,

Money spent on advertisement,

Therefore, the total cost function for Julia's clothing store per month is given as the sum of all cost and is equal to:
Total cost,
