Answer:
0.00003051757
Step-by-step explanation:
Solution: Let
be the number of adult ticket's.
The number of child ticket 
We are given, that an adult ticket cost's $10 and child ticket costs $6. Also the church luncheon made $842.
Therefore,





Therefore, the number of adult ticket's sold = 35
And the number of child ticket's sold = 2 x 35 + 12 = 70 + 12 = 82
The fourth one.
t 20,20.10,20.20,20.30
m 0,1,2,3
Answer: 7c-2
Step-by-step explanation: