Can someone please help me with this math question?

Two rigid transformations are used to map abc to qrs. the first is a translation of vertex b to vertex r. what is the second transformation? a reflection across the line containing ab a rotation about point b a reflection across the line containing cb a rotation about point c

Y=21.95x+10 y=22.45x solve by substitution

The answer is 7.2 how would you put this as money