How can a round 183 to the nearest hundred

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

Which of the following is true for the relation f(x)=2x^2+1

What are the values of a, b, and c in the quadratic equation 0 = x2 – 3x - 2? a = 1, b = 3, c = 2 a=, b = -3,c=-2 a = 1, b = 3, c= 2 a = 1.0= -3, c = 2