Hello from MrBillDoesMath!
Answer: f2(3.2) = 1.4
Discussion:
f2(x) varies inversely with x means that f2(x) = k\x where "k" is a constant.
As f2(x) = 1.6 when x = 0.5 substitution gives
f2(.5) = 1.6 = k/(.5) = k /(1/2) = 2k
so k = 1.6/2 = .8
(end of part 1)
