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4. Shade the region represented by the integral o (2x - 3)dx. Set up and evaluate a limit of a Riemann Sum to find the area. 5. Use properties of integrals and the fact that (" f (x)dx = -5 and f. f(x)dx = 8 to evaluate the integrals given below. Show work if possible. a. [, f (x ) dx = b. So f ( x ) dx = c. [ f (x)dx = d. S, [ 4f ( x ) |dx =