1.\([0.94/2.85\) Points] SCALCET95.1.001. Unless specified, all approximating rectangles are assumed to have the same width. The graph of the function \( f \) is given. (a) By reading values from the given graph of f, use five rectangles to find a lower estimate for the area under the given graph of f, the x-axis, and the lines x =0 and x =10.(Round your answer to one decimal place.)(b) Find new estimates using ten rectangles in each case. (Round your answers to one decimal place.) lower estimate upper estimate