Can someone help me ?

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

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

Long division the problem is 40 ➗ 348 = ?