Unless specified, all approximating rectangles are assumed to have the same width.The graph of the function f is given."The x y coordinate plane is given. One curve labeled y = f(x) enters the viewing window on the y-axis at the value y =5, goes down and right becoming less steep, going through the following approximate points (0,5.0)(1,3.9)(2,3.0)(3,2.4)(4,1.8)(5,1.4)(6,1.1)(7,0.9)(8,0.7)(9,0.5)(10,0.4)."Questions: (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) By reading values from the given graph of f, use five rectangles to find an upper 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.)PLEASE NOTE THAT THE ANSWERS ARE NOT 23.4,17.4,28.2 AS I HAVE ALREADY TRIED THESE AND WERE INCORRECT. THANKS