Emma spent $26 on her dinner with friends. She leaves a 15% tip. How much tip will Emma leave?

The vertices of a rectangle are given in the columns of the matrix . if is found to perform a transformation, what are the coordinates of the transformed rectangle? (0, 0), (0, –3), (–3, –3), (–3, 0) (0, 0), (0, 3), (3, 3), (3, 0) (0, 0), (0, 3), (–3, –3), (–3, 0) (0, 0), (0, 3), (–3, 3), (–3, 0)

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

In a column proof the right column states your reasons