How do i find the sales tax something?

With math question will mark brainliest question in the pic.

In trapezoid klmn, kj=19.2 and jm=22.5. identify ln.

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