Please help with the fill in the blank and which graph

(a) Sketch the region R under the graph of f so the interval [0,2]. Find its exact area using geometry square units (b) Use a Riemonn sum with four subiatervals of equal length (a=4 ) to approwimate the area of R. Choese the representative points to be the left endpoints of the subintervals. scuare units (c) Repeat part (b) wath eght subintervats of equal length in =8 ). square units (d) Compere the approximations obtained in parts (b) and (c) with the evact area found in part (a). Do the aporoaimabors improve with tarper n ? Yes No