Ayouth group is planning a trip to a theme park. the bus holds up to 40 people. the cost for bus parking is $60.00. each person going on the trip will be paying $36.00 for a ticket to enter the park. the equation that models this trip is t = 36x + 60, where t represents the total cost for the group to take the trip and x equals the number of people going. what values are appropriate for the domain? a) x = 40 b) x = 60 c) 0≤ x≤ 40 d) 0≤ x≤ 39