Here is that step by step answer :)
Answer:
54
Step-by-step explanation:
n(AUBUC= n(A) + n(B) + n(C) - n(A^B) - n(A^C) - n(B^C) + n(A^B^C)
28 + 28 + 25 - 11 - 10 - 9 + 3 = 54
If you don't know the formula, use venn diagram
Answer:

Step-by-step explanation:

Multiplying the term by x, adds 1 to the power.
EG

Therefore

To find this, you'll want to divide the amount of music by the total amount of time. 29/(9+12+29) = 29/50 = 58/100 = 58%