Answer: isn't it 21 then?
Step-by-step explanation:
kinda bad at math haha
<h2>
Answer:</h2><h2><em><u>I</u></em><em><u> </u></em><em><u>think</u></em><em><u> </u></em><em><u>4</u></em><em><u>5</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>your</u></em><em><u> </u></em><em><u>answer</u></em><em><u> </u></em><em><u>buddy</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>!</u></em><em><u>!</u></em></h2>
Answer:
B
Step-by-step explanation:

integrate both side
<h2>∫

∫

</h2><h2>

</h2><h3>Substitute y(4)=5</h3><h3>

</h3><h3>

</h3><h3 />
<u>Define x:</u>
Let the number of children tickets be x.
Children tickets = x
Adult tickets = 2x
<u>Construct the equation:</u>
4x + 7(2x) = 108
4x + 14x = 109
18x = 108
x = 6
x = 6
2x = 12
Answer: 6 children tickets and 12 adult tickets.