Please help. These are Work and Kinetic energy questions.

Think: We want to measure the work done by a varying force on a cart. In the course of these measurements, we'll measure some continuous values as best we can with a set of data points. a. In which part of this graph is the force constant 12 with position? 10 Force (N) 6 b. In which part is it varying? c. What is the Work done between 2 m and 4 m? Displacement ( m ) d. What is the Work done between 5 m and 7 m? e. We will have a force that varies based on position, and we will be taking frequent but not continuous data. How do we best approximate the integral W = S Fax? f. We will also be measuring position versus time. How do we approximate v = dx7 at g. What contributions might approximationg integrals or derivatives make to the uncertainty