Determine whether each of these functions from {a, b, c, d} to itself is one-to-one. a. f(a)=b, f(b)=a, f(c)=c, f(d)=d b. f(a)=b, f(b)=b, f(c)=d, f(d)=c c. f(a)=d, f(b)=b, f(c)=c, f(d)=d

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

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Aubrey read 29 books and eli read 52 books what number is equal to the number of books aubrey read?