Please show all work. I'm lost.

5. Determine the best big-o classification for each of the following functions. a) fin) = 4n? +97n log2 n + 1000 d) fin) = 3n (log2 n +5n) b) f(n) = 17n +43n logan + logan e) fin) = (3n+2)(n-1) c) fin) = 6n + 100000 f) Ain) = (4n - 1)(log2 n + 1)