Decentralization provides several advantages: It encourage upper-level management to concentrate on strategic decision It develops lower-level managers by providing them decision =-making experience It improves performance evaluation as managers can be evaluated on the quality of their decisions. All of the above The following information is provided for Southhall Company: What is this company's contribution margin? $100,000 $155,000 $150,000 $55,000 Common methods of financial statement analysis include all of the following except Incremental analysis Horizontal analysis Vertical analysis Ratio analysis Material purchases are entered as ____ in the materials inventory account debits (left side) inventory credits (right side) supplies