Answer:
Let x be the number of adults.
adult = x
children = 500 - x
total fund raised from the adult = $7x
Total fund raised from the children = $4.5(500- x)
Total fund raised = 7x + 4.5(500 -x)
7x + 4.5(500 - x) = 7x + 2250 - 4.5x
= 2.5x + 2250
Ans: Total fund raised = $(2.5x + 2250)
Explanation: