Students from a history class prepare a trip that will cost them a total of $189 that will be shared between them. The day before the trip, 6 students discovered that they can't participate in the trip. To avoid cancellation, the rest of the class decided to pay an additional $2 each. How many students are there in this class? I have: (x-6) = the number of students going 189/x = the cost for the whole class before the 6 students couldn't go 2(x-6) + 189/x = 189 <=== not sure if this is even right. 2x - 12 + 189/x = 189 2x^2 - 12x + 189 = 189x 2x^2 - 201x + 189 2(x^2 - 100.5x) + 189 2(x - 50.25)^2 - 5050.125 + 189 2(x - 50.25)^2 - 4861.125 That doesn't seem to make sense. So I hope you can help me.