Which equation is used to determine the approximate rate of earth's revolution

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

41/2 - 1 1/3 what is the answer as a fraction?

Which is the standard form for this number? (4 x 1 100 ) + (8 x 1 1,000 ) + ( 3 x 1 100,000 ) ? a) 0.004803 b) 0.04803 c) 0.0483 d) 0.483