Which of the following is the additive identity of 5+21

The answer is D

Step-by-step explanation:

Additive Identity is an identity element (such as 0 in the group of whole numbers under the operation of addition) that in a given mathematical system leaves unchanged any element to which it is added.

For example: 2 + 0 = 2. 0 + 5 = 5.

So, therefore the answer is 0

Hope this is helps and you undertand this :)

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(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i