(6 pts) 3. Consider the area under y = x on the interval [0, 3]. Partition the interval into n equal subintervals, and find the sum of the n rectangles using right endpoints. You do not need to Answer the following questions. Show all work. evaluate the limit. (7 pts) 1. Find the average of C(x) =- 5x x' +4 - on the interval x = 1 to x =2. (7 pts) 2. Set up integral(s) describing the area of the region(s) bounded by y = 2x+3 and y = 2x' + 3x]. Use your calculator to evaluate