15. Based on the graph above, find the shaded area to the nearest integer (A) 140 (B) 160 (C) 180 (D) 200 (E) 220 PART B - FRQ (5 points) Directions - Show all your work. Grading is based on the methods used to solve the problems as well as the accuracy of your final answers. Calculators MAY NOT be used for this section. 16. A particle moves along a number line such that its position sat any time , 1 2 0, is given by s(1) = 21 -151 +241+1. (a) Find the average velocity over the time interval 15 / s 2 (b) Find the instantaneous velocity at / = 2. (c) When is the particle at rest? (d) What is the total distance traveled by the particle over the time interval 0 S t s 5