RRB Government Jobs Exams

Find the inverse of the logarithmic function f defined by
f(x) = 2 Log5 (2x - 8) + 3

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RRB Other Question

The population of city A changes according to the exponential function
A(t) = 2.9 (2) 0.11 t (millions)
and the population of city B changes according to the exponential function
B(t) = 1.7 (2) 0.17 t (millions) where t = 0 correspond to 2009.
a) Which city had larger population in 2009?
b) When will the sizes of the populations of the two cities be equal? Find the inverse of the exponential function h defined by h(x) = - 2*3-3x + 9 - 4