The price of a school trip to the zoo is given by the function P = 55 + 3s + 6t, where t is the number of teachers and s is the number of students. Which is the best interpretation of this function? A. Teachers are charged twice as much to get into the zoo as students.
B. The price of the trip to the zoo is $9 per person.
C. The most the trip could possibly cost is $55.
D. There are twice as many teachers going on the trip as students.