Vertex (5, 17); Focus: (5, -14)
The equation of the parabola is

The area (in square feet) of an x-foot-wide sidewalk can be modeled by y=-0.002x^2+0.006x. what is the width of the sidewalk to the nearest foot?

What is the equation of the line that passes through (3,5) and is parallel to y=2x+6

Suppose that circtes a and b have a central angle measuring 100. additionally, the measure of the sector for circle a is 10 m2 and for circle b is 40 m2 if the radius of circle a is 6 m, what is the radius of circle b?