3. (2 points) Use the trapezoid rule over 5 subintervals to approximate sin(x ) dr.Question if R is the region between the graphs of the functions f(x) = 2x3 - 6x - 182 + 1 and g(x) = ] - 327 -81+ 1 over the interval 3, 7 . find the area, in square units, of region R.2. (a) Define a substitution variable u and write In 2: -dr in terms of u. Do not solve integral. (b) Use the substitution u = VI to solve / 2eva VI -dr.\fA Moving to another question will save thi Question 13 Expand the quotient by partial fractions 2x + 27 (x + 1)(x +6) O a. 5 -3 + x - 1 X - 6 O b. 3 -5 + x + 1 x +6 O c. 5 3 + x + 1 x + 6 O d. 5 -3 + x + 1 x +6(1 point) Find the total area enclosed by the curves y = (x| and y = a2 - 2. Area is: