8208 total tickets / 12 concerts =
684 tickets per concert.
How to get answer by Mimiwhatsup (In Decimal Form):

Answer in Fraction Form: 
Answer:
Step-by-step explanation:
A(x)=3x^2
B(x)=8x+3
A(x)=B(x)
3x^2=8x+3
3x^2-8x-3=0
factor
(3x+1)(x-3)=0
x-3=0
x=3
3(3^2)=8(3)+3
3(9)=24+3
27=27
I'm sorry but I really can't see the picture