Question 9: A carpenter fabricates tables, chairs, and windows from wood and fiber. The store has enough units of wood, 24 units of fiber. Each table requires 7 units of wood 4 units of fiber, whereas each chair requires 2 units of wood and 5 units of fiber. Each window needs 3 units of wood and 4 units of fiber. The store must use at least 7 units of wood and at most 18 units of wood. The demand for the window is exactly four. The units of wood used to make the tables and chairs together are more than the units of fiber used to make the window by 2. Carpenter has a sub-budget of at most $1200 to spend on tables. The carpenter is spending $210 to make a table, $225 on a chair, $250 on a window. Formulate a linear programming model for this problem with an appropriate objective function