graphical or algebraic response please. for formulation lingo

PROBLEM 2. A Heat Integration Problem A plant has two process hot stream (H1 and H2) and two process cold streams (C1 and C2). Heating and cooling utilities (HU and CU ) are available for service. A minimum driving force of 10F is required for any heat exchange duty. Table 3 provides the data for the process. Table 3. Stream Data for the Hot and Cold Streams of the HEN Problem Using heat integration, what are the targets for minimum heating and cooling utilities? Please feel free to use any approach you prefer (graphical, algebraic, or optimization-based formulation)