Based on the cost of the adult tickets and the children's ticket, the expression that can find the amount raised is<u> 8x + 3y.</u>
Also if those number of tickets were sold, the amount realized would be <u>$3,054.</u>
The total amount raised can be found as:
<em>= (Number of adult tickets x price of adult tickets) + (Number of children's tickets x price of children's tickets)</em>
Assuming the adult tickets are x and the children's tickets are y, the equation would be:
= (x × 8) + (y × 3)
= 8x + 3y
If 240 adult tickets and 378 children's tickets are sold, the amount realized would be:
= 8x + 3y
= (8 x 240) + (3 x 378)
= $3,054
In conclusion, the relevant expression is 8x + 3y and the amount raised would be $3,054.
<em>Find out more at brainly.com/question/7268387. </em>