Math Experts Reply. Need help

I need assistance with math work. 3 questions involving inverse functions, exponential regression and quadratic regression questions/subquestions. Please reply and i will post pics of the questions. Each question requires the work involved to get it. It also requires what theorem was used (if it involes it). I will select Math tutors with high ratings and no plagiarism. As a remider, do not just give me the answer, give me the work/calculations done for the answers.

The time requested for delieveery is in EST btw. Thanks.