hey everybody im learning how to do EXPONENTIAL GROWTH and im having a problem on how to find the value for t= does anybody understand how to fing to value after t=0? please i really would love some help .

Question

phi · Answer

can you post a specific question?

anonymous · Answer

yea sure

anonymous · Answer

a countries population in 1991 was 26 million. In 1991it was 28million . Estimate the population in 2006 using exponential growth formula. Round your anwswer to the nearest million. :/

phi · Answer

can you fix the numbers?  you have 1991 26 million and 1991 28 million.

phi · Answer

to do this problem I will assume the 2nd statement says 1992  28 million

So, when you see the phrase "exponential growth"  think the following formula:

P=a(1+r)t

where r is the rate of growth and t is the time.  We need to find a and r .
Here P is population in millions
t will be years from 1991 (the first year we know the population.)