functions f and g are defined with their respective domains by
g(x) = 10/x for real values of x, x is not equal to 0
f(x) = for x greater or equal to 2.5
a) state the range of f
b)i) find fg(x)
b)ii) solve the equation fg(x) = 5
c) i) find f^-1(x)
ii) solve the equation f^-1(x) =7
