Pls Help Me With This Question

Polygons efgh and e′f′g′h′ are shown on the coordinate grid: what set of transformations is performed on efgh to form e′f′g′h′? a. a translation 1 unit to the left followed by a 90-degree counterclockwise rotation about the origin b. a translation 1 unit to the right followed by a 90-degree counterclockwise rotation about the origin c. a 90-degree clockwise rotation about the origin followed by a translation 2 units to the right d. a 90-degree clockwise rotation about the origin followed by a translation 2 units to the left

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=