SOLUTION: 1) In 1999 the world hit a population of 6 billion people. The worlds population is growing exponentially which will result in an increase of famine, poverty and sickness if nothin

Question 190568: 1) In 1999 the world hit a population of 6 billion people. The worlds population is growing exponentially which will result in an increase of famine, poverty and sickness if nothing is changed. Some believe that the earth can only sustain a maximum population of 15 billion. If the worlds population follows the exponential function;
p(x) = 6x10-7(1.00805)x + 0.206
where p(x) is the population in billions, and x is the year, at what year will the world hit the maximum sustainable level?
2) Radium-226 is a radioactive element with a half-life of 1600 years.
a) How much of a 1000 g sample of the element will be present after 6400 years?
b) How long will it take for the 1000 gram sample to decay to 1 gram?
3) On September 26, 2001, an earthquake in North Bay measured 5.0 on the Richter scale. What is the magnitude of an earthquake 3 times as intense as North Bays earthquake?
4) How long will it take, to the nearest month, for $2500 to grow to $4000, if it is invested at 7%, compounded monthly?
5) How much louder is a mp3 player (100dB) to a crying baby (80dB)?
6) A liquid has a pH of 3.46. Find the hydrogen ion concentration [H+].

Answer by tvandenberg(45) (Show Source): You can put this solution on YOUR website!
Do your own HW.
RELATED QUESTIONS
If the world population is now(in 2009( 6.72 billion people and is growing at 1.14%, how... (answered by rapaljer)

If the world population is now(in 2009( 6.72 billion people and is growing at 1.14%, how... (answered by rapaljer)

The population of the world in 1995 was 5.7 billion people. The observed population... (answered by stanbon)

In the year 2000 the population of the world was 6,1 billion. The doubling time of the... (answered by ikleyn)

in the year 2000 the population of the world was 6.1 billion. the doubling time is 20... (answered by ikleyn)

The population of the world in 1987 was 5 billion and the growth rate was estimated at 7... (answered by josgarithmetic)

A city is growing exponentially at a rate of 1.5% annually. Its population is currently... (answered by stanbon)

The world population is projected to be 7.6 billion in 2043. At that time, there are... (answered by ewatrrr)

If the world population is now (in 2009) 6.72 billion people and is growing at 1.14%, how (answered by rapaljer)