$20$pts$)$: What is the time complexity of the functions below $($express answer in simplified Big O notation$)?$

a$.$ O$($n$/2+99)$

b$.$ O$(($n$3+3)*($O$($n$)+5))$

c$.$ O$(12$n $+6$n$3+1000)$

d$.2$n$3+$ O$($n$2)$

e$.$ log$2$n $+2+$ log$5$n

$2.(20$pts$)$: What is the time complexity of the functions below $($express answer in simplified

Big O notation$)?$

Code Time complexity

a$)$

b$)$

c$)$

d$)$