I put 37 points in this pls this is urgent!! I’ll give brainliest to best answer... PLEASEE

Answer:
19x + 550n + 200
Step-by-step explanation:
Total cost of the skirts
[tex]7x + 150n + (2n + 1) \times 200 + 4 \times 3x \\ \\ = 7x + 150n + 400n + 200 + 12x \\ \\ = \purple{ \bold{19x + 550n + 200}}[/tex]