(10x5)+(30+20)x10-100-1= if answered correctly and shows work I will mark brainlist
and god bless you all

(10x5)+(30+20)x10-100-1

First solve everything in parenthesis.

50+50x10-100-1

Then, because of PEMDAS (Parenthesis, exponent, multiplication/division, addition/subtraction) you need to then do 50x10.

50+500-100-1

Then, because addition and subtraction can be switched around you do 50+500 first.

550-100-1

Then you do 550-100.

450-1

Then you subtract 450-1 and get your answer.

450-1=449

Hope this helps and have a nice day!!!

Number nine is f(x)= 40x : ) hoped i ya