The proportional relationship between the number of hours a business operates and its total cost of electricity is shown in the following graph. Which statements about the graph are true?
Choose all answers that apply:

(Choice A)
The y-coordinate of point A represents the total cost of electricity when the business operates for 4 hours.

(Choice B)
The total cost of electricity is $35 when operating the business for 1 hour.

(Choice C)
None of the above

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- : )

let's first notice, the center of the hyperbola is at the origin, since the focus points are equidistantly 3 units away from the origin, that also means that the distance "c" from the center to either focus is 3.

it should also be notable that, the traverse axis for this hyperbola is vertical, or namely over the y-axis and therefore, the positive fraction will be the one with y-variable.

the traverse "a" component or distance from the center to either vertex is not 2, is more than 2, so we can safely put it at √5 ≈ 2.24.