How does scarcity force people to make economic choices?

Amathematical approximation called the rule of 70 tells us that the number of years that it will take something that is growing to double in size is approximately equal to the number 70 divided by its percentage rate of growth. thus, if mexico's real gdp per person is growing at 7 percent per year, it will take about 10 years(=70/7) to double. apply the rule of 70 to solve the following problem. real gdp per person in mexico in 2005 was about $11,000 per person, while it was about $44,000 per person in the u. s. if real gdp per person in mexico grows at the rate of 5 percent per year: how long will it take mexico's real gdp per person to reach the level that the united states was at in 2005? (hint: how many times would mexico's 2005 real gdp per person have to double to reach the u. s.'s 2005 real gdp per person?

Marketing1. suppose the average price for a new disposable cell phone is $20, and the total market potential for that product is $4 million. topco, inc. has a planned market share of 10 percent. how many phones does topco have the potential to sell in this market? 20,0002. use the data from question 3 to calculate topco, inc.'s planned market share in dollars. $400,0003. atlantic car rental charges $29.95 per day to rent a mid-size automobile. pacific car rental, atlantic's main competitor, just reduced prices on all its car rentals. in response, atlantic reduced its prices by 5 percent. now how much does it cost to rent a mid-size automobile from atlantic? $28.45

2. the external environment (connect)choose whether each example belongs in the general, task, or internal environment. exampleenvironmenta worldwide recession task environment / general environment / internal environmentlocal mothers asking their community grocery store to carry no-salt cheerios-type cereal for their babies task environment / general environment / internal environmentchoose the phrase that best completes the following sentence. the relationship between the task environment and the general environment is best described as: a one-way system: changes in the task environment affect the general environment, but changes in the general environment do not affect the task environment. an open system: changes in the task environment affect the general environment, and changes in the general environment affect the task environment. a one-way system: changes in the general environment affect the task environment, but changes in the task environment do not affect the general environment. a closed system: changes in the general environment do not affect the task environment, and changes in the task environment do not affect the general environment.©bloomberg via getty imagesmanagement in the newsin april 2010, the explosion of british petroleum’s (bp) deepwater horizon oil drilling rig and the accompanying oil spill dramatically changed the external environment in which all oil companies operate. the explosion released more oil than any other accidental spill in history and had a huge impact on the waters and surrounding communities of the gulf coast. the conditions that led to the spill, the attempts to stop the spill, and the clean-up and aftermath of the spill prompted debates in the u. s. senate, concern on wall street, and attention from companies all over the world. match each oil spill event with a specific dimension of the general environment. eventgeneral environment dimensionbp stock prices falling 25% during the first month after the oil spill oil seeping into pelican nesting grounds, which will place the brown pelican back on the endangered species list people moving from louisiana to oklahoma to avoid the effects of the spill