Languiy ul your glauc. Problem 1. (2 points) 1. Draw 4 estimating rectangles using left-endpoints on the graph of f(x) below to estimate the area below the curve between r = 0 and x = 8. 3 Problem 3. (2 points) Find the antiderivative of each of the following 2 1. f9x2 + 6x - 3 dx 0 0 2 6 8 2. What is the area below the curve estimated by the 4 rectangles you drew in part (a)? 2. f3Vx - 4 dx 3. Jezz dx Problem 2. (2 point) If f'(x) = 423 - 6.x + 2 and f(1) = 0, find f(x). 3x2+4 dx 73 +41-3