Answer: The correct answer is "C. An activity-based approach refines a costing system by focusing on individual activities as the fundamental cost objects. It uses the cost of these activities as the basis for assigning costs to other cost objects such as products or services.".
Explanation: The ABC costing model is a model that is based on the grouping into cost centers that make up a sequence of value of the products and services of the company's productive activity. It focuses its efforts on managerial reasoning in an adequate way the activities that cause costs and that are related through its consumption with the cost of the products. The most important thing is to know the generation of costs to obtain the greatest possible benefit from them, minimizing all the factors that do not add value.
The market demand curve would be 1000 - 0.125Q.
<h3>How to calculate the demand curve?</h3>
It should be noted that the market demand curve will be the sum of the individual demand curve.
The market demand curve will be calculated thus. Mary’s demand curve is 5P = 5000 – 1.25QM. Here, p = 1000 - 0.25QM
Jack’s demand curve for donuts is given by P = 1000 – 0.5QJ. Helen’s demand curve is given by QH = 2000 – 2P. This will be P = 1000 - 0.5QH.
The slope will be:
= 0.5 × 0.25
= 0.15
The demand function of Jack and Helen are the same. The demand curve will be 1000 - 0.125Q.
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Answer:
c) 10% more peanut butter on the shelves
Explanation:
Since peanut butter has a negative income elasticity of demand (-0.5) with a decrease in income, there should be an increase in the demand. This is usually true for cheaper goods or goods with low added value. The change in demand (D) is represented as follows:

As a result, you should stock 10% more peanut butter on the shelves.
The answer is c).
Given that <span>In 1981, 16 percent of wives earned more than their husbands.
It is reported that in 2005, about 26% of wives earned more than their husbands.</span>
Extrinsic motivation is defined as THE PURSUIT OF AN ACTIVITY FOR EXTERNAL REWARD. Extrinsic motivation refers to behaviours that are driven by external rewards such as money, fame, praise, etc. Such behaviours arise from outside the individuals.