Answer:
They should operate Mine 1 for 1 hour and Mine 2 for 3 hours to meet the contractual obligations and minimize cost.
Explanation:
The formulation of the linear programming is:
Objective function:

Restrictions:
- High-grade ore: 
- Medium-grade ore: 
- Low-grade ore: 
- No negative hours: 
We start graphing the restrictions in a M1-M2 plane.
In the figure attached, we have the feasible region, where all the restrictions are validated, and the four points of intersection of 2 restrictions.
In one of this four points lies the minimum cost.
Graphically, we can graph the cost function over this feasible region, with different cost levels. When the line cost intersects one of the four points with the lowest level of cost, this is the optimum combination.
(NOTE: it is best to start with a low guessing of the cost and going up until it reaches one point in the feasible region).
The solution is for the point (M1=1, M2=3), with a cost of C=$680.
The cost function graph is attached.
The answer is compound interest my friend.
What allows an individual to gain from unexpected inflation are stocks
Answer:
Make-A-Wish foundation
Earth hours
Explanation:
make a wish donates money and necessities
earth hours supports australian environment protection
Answer:
Relatively more than
Explanation:
As we know,
The levered firm is that firm in which debt is involved whereas unlevered firm is that firm in which there is no debt involved.
As if the EBIT drops, the return on equity drop is relatively more than the ROE of unlevered firms due to involvement and not involvement of debt. As it generated high risk and return which is gradual increases during a given period of time