Pls help im already failing and i really dont understand this

Answer:
B. 9.99 + 1.29n [tex]\leq[/tex] 50
Step-by-step explanation:
The inequality of [tex]\leq[/tex] means less than or equal to. Her limit is $50. She has already spent $9.99. Therefore if $1.29 is the cost each song, then n is the number of songs she can afford below the cost of $50.