Ineed with this problem because i have hard problems in math and math isn't really my subject

Consider the sequence below. 3 , 1 , 1/3 , 1/9 , select the explicit function which defines the sequence.

Abcd is reflected across the x- axis, then rotated 90 clockwise about the orgin, and finally reflected across the line y= x to form a’ b’ c’ .

Write a problem to fit this equation 2k + 5 =29