Keiko has seven colors of lanyard. she uses threee different colors to make a key chain. how many different combinations can she choose

Pls , the question is in the picture!

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

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)