Need help ASAP I’m on an exam there is a timer Thankss + BRAINLIST only for correct answer
(question in the picture )

Quick translate "x is 12 units from 20" into an equation. what are the values of x being described? if you can answer any of my other questions that'd be great too

You call the pizza store and find out that eachpizza has 12 slices. you expect 16 people tocome, and you estimate each person will eat 3slices. how many pizzas should you order

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=