49. which of the following sequences represents a
geometric sequence?
a)
1 1 1
a) 515179..
b) 4,2,0, -2,
c) 4,2,0,-2,
d) 2,-4,8,-16,

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

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

What is the missing step in this proof ?