1. Find the coordinates of the center and the measure of the radius for a circle whose equation is (x - 8) + (y + 4) = 12

Amodel rocket is launched from a roof into a large field. the path of the rocket can be modeled by the equation y = -0.04x^2 + 8.6x + 4.8, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. how far horizontally from its starting point will the rocket land? a. 0.56 m b. 215.56 m c. 431.11 m d. 215.74 m

I'm confused on this could anyone me and show me what i need to do to solve it.

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?