What’s the height of the tree

#12 find the value of x. #13 find the value of the variable.

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

What’s 8y+48 and factor each expression completely