An elementary schoole is taking a busload of children to a sceience fair. It costs $140.00 to drive the bus to the fair and back, and the school pays each student's $3.25 admission fe. From the the formula taht express the total cost C, in dollars, of the science fair trip as a linear functin of the number n of children who make the trip, determine the number of children who made the trip if C(n)=192.00.