Thursday

July 31, 2014

July 31, 2014

Posted by **Dave** on Thursday, November 10, 2011 at 8:08pm.

- calculus -
**Steve**, Friday, November 11, 2011 at 12:00amJust plug the numbers into the good old eponential growth formula:

P(t) = Po * e^rt

P(0) = 8.4 so Po = 8.4

P(t) = 8.4 e^rt

P(3) = 9.3 = 8.4 e^3r

9.3/8.4 = e^3r

ln 1.107 = 3r

r = ln 1.107/3 = 0.0339

P(t) = 8.4 e^.0339t

P(8) = 8.4 e^0.271 = 11.0

**Related Questions**

Calculus - The population of a region is growing exponentially. There were 40 ...

6th grade Math - I need some help figuring out how to work the word problem ...

Math AP Calc - In 1951, the population of India was 357 million people. By 1981 ...

Calculus - Year 1960 1970 1980 1990 2000 Rate 39 59 64 89 106 of change (million...

Math - I have no idea how to even start this problem. In 1951, the population of...

Math - In 1951, the population of India was 357 million people. By 1981 it had ...

TRIG - the population of a certain city is 1.3 million people. if the population...

Math-Reiny Help! Previous Problem - In 1951, the population of India was 357 ...

algebra - (1) If the population of a city was 2 million in 1995 and growing at a...

Math - Solve. The population of a particular country was 29 million in 1980; in ...