What is the vertex of the parabola given by the equation y = x2 + 4?

(2, 8)

(-2, 8)

(0, 4)

(4, 0)

(0, 0)

Can someone answer this question? : )

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document