1. Use the following figure to evaluate the definite integral. To receive credit, you must show all steps. 16 2. Fill in the blank to express the following sum in sigma notation. 43+5'+6 +73 +83 3. Estimate | v2.x d.x using a left Riemann sum with four subintervals of equal width. Round your answer to four decimal places. To receive credit, you must show all steps. Sketch a graph and use geometry to evaluate the definite integral (3x + 2) d.x. Do not use the Fundamental Theorem of Calculus for this problem.5. " / (x) is an increasing function over the interval ( $ x