Please help and give an explanation!:)

D) All real numbers greater than or equal to -4.

Explanation:

The lowest point occurs when y = -4, which is where the vertex is located.

The range consists of y values such that y = -4 or y > -4. We can shorten that last sentence to say . So y is greater than or equal to -4.

As you can probably tell, the range is the set of all possible outputs of a function.

sounds & other waves originate from any vibrating object