Plis help me answer this question plis also give expolaniaton

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

The local farm is advertising a special on fresh picked peaches. the farm charges $4.25 to pick your own peck of peaches and $3.50 for each additional peck you pick. write an equation for the total cost of peaches in terms of the number of pecks. deine your variables. how much does it cost to pick 3 pecks of peaches?

Ill mark the brainliest if you me with the these three questions 7,8,9