Answer:
25%
Step-by-step explanation:

First expand the brackets by multiply everything in them by 2
2(3x-1)=
6x-2
then add the 4 and the 9 to -2 and you get
6x+11 so therefore its a
6 or 9 maybe I’m not real for sure though
45 songs. if you bought 15 videos that would be 15x3=45. 90-45=45. leaving you $45 to buy songs