Answer:
The above question answer is (a) leading coefficient is positive and degree is odd.
Hope it is right answer for it!!
To find the answer you would need to add 11 to 75 and then that is 86 so then divide that by 1 and the answer is 86
For this case we propose a system of equations:
x: Let the variable representing the number of children in the concert
y: Let the variable representing the number of adults at the concert
According to the assistance we have:

According to the cost we have:

Substituting the first in the second equation we have:

Thus, the concert was 375 adults.
On the other hand we have:

Thus, the concert was 1125 children.
In total they were:
people
ANswer:
The concert was 1500 people