Which of the following is a key property of the quadratic parent function? A. It is NOT a parabola

B. Its vertex is in quadrant III.

c. It is in quadrants I and II.

D. It is NOT a function

C

Step-by-step explanation:

First, note that the parent quadratic function has the equation .

All quadratic functions are parabolas. Eliminate A.

The vertex of is on the origin point (0,0), not in Quadrant III. Eliminate B.

is definitely a function. Eliminate D.

The correct answer is C. The function covers Quadrant I and II.

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.