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Question 4.3.2   As well as underground water, name one other place the water naturally comes from to go into the sea. (1)

Question 2.1.2   This same gas in question 2.1 was called ‘heavy air’ can be cooled to a solid at -78⁰C, and it becomes a solid. What is it called when it is a solid? [ans1] (1)

(Part Assignment) Complete the cell G10, which is for the total cost. Use the relative cell reference (No $). No space in the formula. =[G10]

Question 1.2   If you put something in a container, how would you tell if it was a liquid? (1)

A binding constraint means that the constraint is exactly satisfied, and its left-hand side (LHS) does not equal its right-hand side (RHS).

Question 4.3.3   What is the scientific name for rain, snow and other forms of water that fall from clouds? [ans1] (1)

Question 2.1.3   What is it used for as a solid? (1)

(Part SA) Each question is independent of the other questions. Consider an LP maximization problem, in which X and Y denote the number of units of products X and Y to produce, respectively. The Excel Sensitivity Report for this problem is shown below. Calculate and explain what happens to the optimal solution for each of the following situations.

QUESTION 3 Answer the following questions regarding heating and cooling:

(Part SA) Suppose that 50 units of Resource 4 were found to be unusable, how would the solution change?