The graph shows the amount of a chemical in a water sample. It is decreasing exponentially. Find the coordinates of the points labeled A, B, and C. Explain your reasoning
Point A: (0, 100)
At the start of the graph (x=0), the amount of chemical in the water sample is at its maximum value of 100 units.
Point B: (1, 50)
At point B, the amount of chemical has decreased by half from its initial value. This occurs one unit of time after the start of the graph.
Point C: (2, 25)
At point C, the amount of chemical has decreased by half again from its value at point B. This occurs two units of time after the start of the graph.