Which of these expressions represent solutions to the equation

Aconvex octagon has interior angles that measures 73 degrees, 172 degrees, 132 degrees, 59 degrees, 154 degrees, 163 degrees, x degrees, 2x degrees find the value of the missing angles

What are the domain and range of the functiony = 2(x - 3)2 + 4?

Aquadratic equation in standard from is written ax^2= bx+c, where a, b and c are real numbers and a is not zero?