Powers of three that are in range of 3 through 1000

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

Which expression shows the sum of the polynomials with like terms grouped together

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two