Since x is the time in years, since the coral was measured, and y is the volume of the coral in cubic centimeters.

**1**.Graph A only shows the years below year 0. It shows only the negative values of x and the associated negative values of y. The exponential function graph should also show positive values of x and y.

Graph B covers the years from year 0 to year 9, but it shows only one negative value of x and y. The scale is not easy to read as the points are close to one another. The exponential function graph should be graphed on a reasonable set of axes, to make it easier to read.

Graph C is easier to read, and it shows the volume of the coral until year 6.

**2**.I would change Graph A so it shows the years after year 0. I would change the scale in Graph B so it would become more easy to read, by labeling the points and plotting the points on a reasonable set of axis.

3.The graph would look as shown below.

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