Answer: [A]: "library card".
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Explanation: One would need a valid, government-issued photo ID card (i.e. that has not expires).
Although SOME library cards include one's picture, library cards do not constitute "valid ID's" because they are not "government-issued" and would, theoretically, be easy to be made fraudulently (e.g. not have security-issued seals and features).
Even "school ID's"; or "college ID cards"; even if "current" (e.g. currently enrolled" with a photo ID) would not be considered "official" and would only be considered "secondary ID".
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Answer:
The selling price would be
.
Step-by-step explanation:
We have been given that a sports drink has a cost of $1.25.
We need to figure out the selling price of the sports drink so that the store is able to generate a profit of $0.50 per drink.
We know that profit is found by subtracting the cost of an item from selling price of the item. Therefore, selling price of the item can be found by adding the profit to the cost.
Therefore, the required selling price of the sports drink would be:

Answer:
10.
Step-by-step explanation:
AK = KB so
3x + 1 = 1/3 x + 9
3x - 1/3 x = 9 - 1 = 8
Multiply through by 3:
9x - x = 24
8x = 24
x = 3
So AK = 3(3) + 1 = 10.