Calculus – Integrals, Riemann Sums, Area between Curves

I have this Calculus assignment due by Wednesday afternoon. It involves integrals, riemann sums, area between curves, etc. Files are attached. For the first file with 3 questions, I need all work shown along with answers. For the second file with 10 questions, I only need answers.This is only for tutors with positive reviews. If you don’t have any reviews, please DO NOT respond because I will not reply. Thanks.