Answer: The correct answer is "d. a preference toward a smooth consumption path over time.".
Explanation: The main reason people save during their working years is a preference toward a smooth consumption path over time since they prefer to consume what is just and necessary so that in the future, even if they are affected by different circumstances, they can continue to maintain the same standard of living and / or consumption.
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.
Answer:
$68,600
Explanation:
An predetermined overhead of $70,000 was estimated for an activity of 2,500 hours. The actual overhead assigned to the products is given by multiplying the fraction of the total 2,500 hours of activity utilized by the products by the predetermined overhead:

The total amount of overhead assigned to the products is $68,600.
Answer:
long run, productive resources
Answer:
the total contribution margin is $245,700
Explanation:
The computation of the total contribution margin in the case when the sales volume rise by 40% is shown below:
Since the sales volume is rise so the contribution margin is also rise by 40%
Therefore the total contribution margin would be
= Contribution margin × (1 + increased percentage)
= $175,500 × (1 + 0.40)
= $175,500 × 1.40
= $245,700
Hence, the total contribution margin is $245,700