Pls tell me answer for number 4. and. 8.

What is the inverse of the function f(x) = 2x + 1?

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4

Abox holds 500 paperclips. after a week on the teacher's desk 239 paperclips remained. how many paperclips were used?