Use nite approximation to estimate the area under the graph of for}: 333 and above the graph of {(x) = 0 from x0 = 0 to x\" = 16 using i) a lower sum with two rectangles of equal width. ii) a lower sum with four rectangles of equal width. iii) an upper sum with two rectangles of equal width. iv) an upper sum with Your rectangles of aqua-I width. The estimated area using a lower sum with two rectangles of equal width is Eli square units. (Simplify your answer. Type an integer or a decimal.) ' The estimated area using a lower sum with four rectangles of Equal width is atware units. ' (Simplify your answer. Type an integerora decimal.)- The estimated area using an upper sum with two nactangles of equal width ism squatter units. (Simplify your answer: Type an integer or a decimal.) The estimated area using an upper sum with four rectangles of equal width is D square units. (Simplify your answer. Type an integer or a decimal.)