I really need help. I need to answer this 3 questions

My first is this:

Pizzas CD's
------ ------
0 15
1 14
2 12
3 9
4 5
5 0
Using this information, calculate the marginal benefit and draw the marginal benefit curve.
****I really need to know how to calculate it.

My second question is: which is totally unrelated.

2.How did the catastrophic events of 9-11 affect the marginal benefit and marginal cost diagram? (Hint: One of the curves shifted). Draw a diagram showing the post-9-11 marginal benefit and marginal cost diagram. What is the new efficient quantity of security services? How does this new point relate to the discussion in the Wall Street Journal article about the costs being imposed on the public from enhanced security?

***I know i asked this second one already but this time i just need a bit clarification.

****Why would the Marginal benefit shift to the right and how do we know how much it shifts by to determine the new efficient quantity???

Now my final question is this:

3.Suppose a new technology becomes available that cheaply and easily detects “intent to harm” by remote sensing of physiological indicators. Unobtrusive (and inexpensive) detectors would immediately alert authorities to the presence of terrorists. With the same amount of land, labour and capital as before, this technology would enable us to provide more “units of security”. What would be the effect of this new technology in the diagram with the production possibilities frontier and in the diagram with the marginal benefit and marginal cost curves? What happens to the efficient quantity of security?

**** If that happens then would x-axis of the PPF shift outward and in relation to the marginal benefit and cost, both curves will shift outward and to the right because the cost is increasing as well as the benefit.

This is the PPF for questions 2 and 3
*img170.imageshack.us/img170/7894/ppfiq2.jpg

plz help

Sure! I'll help you with each question one by one.

1. To calculate the marginal benefit, you need to find the change in benefit for each additional pizza consumed. In this case, you have a table showing the number of pizzas and CDs. The marginal benefit is the decrease in the number of CDs when you consume an additional pizza.

For example, when you go from 0 pizzas to 1 pizza, the number of CDs decreases from 15 to 14. So, the marginal benefit for the first pizza is 15 - 14 = 1. Similarly, you can calculate the marginal benefit for each additional pizza.

Once you have the marginal benefits calculated, you can plot them on a graph to create the marginal benefit curve. The x-axis represents the number of pizzas, and the y-axis represents the marginal benefits. Connect the points to form a curve.

2. The impact of the 9-11 events on the marginal benefit and marginal cost diagram depends on how it affected people's perception of security. If the events made people value security more, the marginal benefit curve would shift to the right. This indicates that people are willing to consume more security services at any given level of cost.

Determining the new efficient quantity of security requires comparing the new marginal benefit and marginal cost. The efficient quantity is where the marginal benefit equals the marginal cost. You can find this point on the graph by identifying the intersection of the new marginal benefit curve (shifted to the right) and the marginal cost curve.

As for the relation to the Wall Street Journal article, you would need to refer to the specific article and see how it discusses the costs being imposed on the public from enhanced security. The new point on the graph can help illustrate the changes in costs and benefits.

3. If a new technology becomes available that allows for more units of security with the same resources, it would shift the production possibilities frontier (PPF) outward. The PPF shows the maximum combination of goods that can be produced with limited resources. With the new technology, more security can be produced without sacrificing the production of other goods.

In relation to the marginal benefit and cost curves, both curves would shift outward and to the right because the new technology would increase the benefits and costs of providing security. The efficient quantity of security would increase as well, as the new technology allows for more units of security to be produced within the given resources.

In summary, the marginal benefit and cost curves represent the trade-off between the benefits and costs of providing security, while the PPF represents the maximum possible combinations of goods that can be produced. Changes in technology, events, or preferences can shift these curves and affect the efficient quantity of security.