Can you please help me I will give out the brain thing and extra points please help me. Danielle is ordering costumes for her dance recital. The company Danielle is ordering from charges $19 per costume and a shipping fee of $9.

Based on this information, which function can be used to represent the relationship between the total cost, k, and the number of costumes Danielle orders, u?

k=19u−9

k = 9u + 19

k = 19u + 9

k=9u−19