(-1,2.5), (0,5), (1,10), (2,20)
275 is the answer to the question
I don't understand your language sorry
If C is a point between AB then we can write AC + CB = AB
Same way we can write tu + ub = tb
tu = 4x - 1 , ub = 2x - 1 and tb = 5x
So we can write it as




So x is = 2.