What are the Big$-$Oh orders of the following growth functions? You should provide a relatively tight

upper bound. $[2$ points$]$

f$1($n$)=100+10$log$10($n$)$n$2+45$n

f$2($n$)=$ nlog$10($n$)+$ nlog$2($n$)$

$7.$ Show that the upper bound you give for f$1$ above does indeed hold