Course Modules xYz xyzHomework As X Applications | Ra X Section 4.1/4.2 - x Inbox (2) - jam5( X campus view https://www.xyzhomework.com/imathas/assessment/showtest.php See the source image Use four rectangles to approximate the area of the planar region under the graph of f(x) = 0.3x3 - 0.9x2 + 11 over the interval [2, 8]. Use the left-most end points. ac f (ac) Sum: Using four rectangles, the approximate area over the interval [2, 8] is square units. Question 2. Points possible: 1 This is attempt 1 of 1. A robotic machine fills containers with an acid solution at the rate of 80 + 5t milliliters (mL) per second, where t is in seconds and 0