Angle S = _ degrees!
please help if you understand

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

Find the difference (8ab+a+2) - (3ab+6)

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?