The Science Club went on a two-day field trip. The first day the members paid $40 for transportation plus $18 per ticket to the planetarium. The second day they paid $100 for transportation plus $15 per ticket to the geology museum. Write an expression to represent the total cost in dollars for two days for the n members of the club. An expression that represents the total cost in dollars for two days for the n members of the club is given by​