Please help! Find the inverse function of y = x-11/5

Ineed to learn how to solve this problem

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books