Is this expression rational and choose the letters and

Given the function f(x) = log base 4(x+8) , find the value of f^-1(2)

1. a right triangle is graphed on a coordinate plane. find the length of the hypotenuse. round your answer to the nearest tenth. 2. use the angle relationship in the figure below to solve for the value of x. assume that lines a and b are parallel and line c is a transversal.

Which of those sequences is a geometric sequence