What is the axis of symmetry for the quadratic equation 4x^2-16x+5 plz help

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?

What expression is equivalent to 42x-56y

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"