Its time for me to die

If n-9 is an even number what are the next three consecutive intergers

The radius of the circle is 4 cm and the measure of the central angle is 90° the area of the sector with a central angle measuring 90° and radius of length 4 cm is vt cm the triangle in the sector is 4 cm the area of the triangle is v/cm² the area of the segment of the circle is (471 - ) cm?

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left