Hope this helps! I have to type more words apparently for me to send this. Ok that should work!
3x=18 because you add the like terms 6 and 12
Answer:

Step-by-step explanation:
total amount of acts = 4+10+6 = 20
amount of dancers = 6
probability of picking a dancer = number of dancers / total number of talents = 6/20 = 3/10
I think it’s C. Im not completely sure.