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Get Full Access to Precalculus - 9 Edition - Chapter 3 - Problem 47
Get Full Access to Precalculus - 9 Edition - Chapter 3 - Problem 47

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# A small manufacturing firm collected the following data on

ISBN: 9780321716835 146

## Solution for problem 47 Chapter 3

Precalculus | 9th Edition

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Problem 47

A small manufacturing firm collected the following data on advertising expenditures A (in thousands of dollars) and total revenue R (in thousands of dollars). (a) Draw a scatter diagram of the data. Comment on the type of relation that may exist between the two variables. (b) The quadratic function of best fit to these data is Use this function to determine the optimal level of advertising. (c) Use the function to predict the total revenue when the optimal level of advertising is spent. (d) Use a graphing utility to verify that the function given in part (b) is the quadratic function of best fit. (e) Use a graphing utility to draw a scatter diagram of the data and then graph the quadratic function of best fit on the scatter diagram.

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Chapter 7 North Africa/Southwest Asia  Geographic Features  Islam (and related culture)dominate  Strong internal divisions within countries (ex: Lebanon and Iraq)  Some nations without states (ex: Palestinians, Kurds, Berbers, people of Western Sahara)  Some boundaries date from the colonial era = some current problems  Name  “Middle East”­ only ‘east’ from Europe  “Arab World”­ what about Turkey, Iran  “Muslim World”­ what about Israel  Best name: North Africa/ Southwest Asia  Dry World  Major deserts… so most live near water  Oil  More than half of the world’s oil in Middle East th  In early 20 century, Western countries bring \$\$\$ and tech to local oil industry  Oil brings urbanization, infrastructure  Islam: Background  Begins in 7 century Arabia  Holy book is the Quran = revelation of God (Allah) to the prophet Muhammed  Muhammed and successors are religious AND political AND military leaders… create Islamic country (caliphate) across the known world  Caliphate breaks up into many groups  SUNNI ISLAM (most) and SHIA ISLAM (less)  Spatial Diffusion  The way idea, inventions, and cultural practices spread through a population in space and time  Ex: Islamization  Background  After WW1: the Ottoman “Caliphate” divided up by Europe  After WW2, the Jewish country of Israel is created from British/UN colonies  Vocabulary differences!  ISLAMIC­ describing Islam, culture, etc.  ISlAMISTS­ political caliphate­meaning  Arab Spring: 2011­present  Past: many M.E. countries led by corrupt totalitarian leaders that crack down on society and on Islamists  High unemployment, low median age  Starts in Tunisia, protest follow, spread throughout M.E.  Regimes overthrown in Tunisia, Egypt, Libya, Yemen; uprising in Syria, etc.  First seen as ‘democracy’, but now what  Islamist takeover US perspective… Regions of North Africa/Southwest Asia  Egypt  Centered on the NILE river valley and delta  Very populous country in the M.E. (80m)  95% live < 12 miles of the Nile  Capital Cairo  Sudan  Civil war… Muslim north and Christian south (split)  Another conflict in west Sudan, in Darfur  The Maghreb  Western North Africa (the Maghreb)  Algeria, Libya, Tunisia, and Morocco  Places where African, European and Arab cultures meet  Rooftop architecture  Beirut, Lebanon  Civil war between four different religions  Iraq  Mixture of 3 big groups:  Sunni Muslims  Shi’a Muslims  Kurds  Border of Iraq drawn by Europeans after WW1  Kurds  Stateless nation­ ethnic group without a country  Kurds one of the largest stateless nations in the world  Israel and Palestine  Israel, the Jewish state, established in 1948  Local Arabs (“Palestinians”) oppose  Many wars: Israel keeps winning  Ownership vs. Control  Arabian Peninsula  Source and focus of Islam (including city of Mecca­ Holiest in Islam)  Most oil deposits on earth  Saudi Arabia, and other “Gulf States” (Kuwait)  Environmentally Dominated by desert  Politically dominated by Saudi Arabia  Economic activities “ across” the peninsula ( ex: inland Riyadh)  Massive improvements in health care, housing, education, etc.  Demographic: 60% of area’s population under the age of 21  Turkey  Sits between Europe and Asia  Modernization and Industrialization  Growing Islamist movement  Iran  Theocracy­ controlled by Islamic leaders  Shi’a Islam (Shi’ite)  Central Asian Countries  Because of past Soviet control, some Soviet/ Russian cultural influence today  Afghanistan  1980s: poor, rural Afghan fighters fight Russians for years  Soviets leave Afghanistan, but in the 1990s, the hardline Islamist TALIBAN take over  Taliban impose strict rules on society  Burqas, beard patrol, kites, musical instruments, girls’ schools… All information comes from Dr. Patrick Hagge

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