What is the x-coordinate of the center of the circle for the following circle equation?

x^2 + y^2 + 12x - 14 = 0

What are the coordinates of the point is 1/4 of the way from a (-6, -3) to b (6, 1)? a. (-3, -2) b. (0, -2) c. (-1, 0) d. (3, 2)

If f(x) = 4x – 3 and g(x) = 8x + 2, find each function value a.f[g(3)] b.g[f(5)] c.g{f[g(-4)]}

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?