The way it is written, none of them.

The "a"s cancel out.
Part A
We have

. To solve for the x-intercept, we set f(x) equal to 0. That is

Take the square root of both sides,
The x-intercept is (-2,0).
To solve for the y-intercept, we set x=0. That is
The y-intercept is (0, 8)
The coordinates of the optimum point are actually the vertex which can be easily seen from the vertex form equation given above. The minimum point is
(-3, -1).
Part B.
We have

.
Factor out -2

Complete the square

Simplify

Part C
We have

.
The maximum height is 12.25 feet after 0.875 seconds from the time of the jump. The dolphin will be back in the water after 1.75 seconds. The graph of the jump is shown in the photo.
2 2/3 = 2x3+2/3 = 8/3
8/3 / 1/3 = 8/3 x 3/1 = 8/1 = 8
Using it's concept, it is found that the range of the function is given as follows:
.
<h3>What is the range of a function?</h3>
The range of a function is the set that contains all possible output values for the function. In a graph, the range is the set that contains the values of y.
In this graph, the extremes are at y = 0 and y = 7, and the diagonal line crosses as values in this interval, as shown in the graph at the end of the answer, hence the range of the function is given as follows:
.
More can be learned about the range of a function at brainly.com/question/24374080
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