The table below shows the ticket rates for whale watching trips offered by Dolphin Tricks & Tours.

Age Ticket Price
Under three years free
Three to twelve years $35
Over twelve years $46

On a certain day, the company took 88 people on whale watching trips. There were 44 children aged twelve and under, of which some children were under three years. If x represents the number of children under three years, which equation can be used to find the value of x, where C represents the total amount of money collected from tickets that day?
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