# algebra

posted by .

the population P(t) of a new residential development t years after 2010 is P(t)=8000(1-e^-0.3t). What is the population for 2015?

* algebra - Reiny, Sunday, December 5, 2010 at 6:19pm

replace t with 5 and evaluate using your calculator

(I got 6215)

I was the population to increase in a new development.
Are you sure your formula is correct?

* algebra - math help, Sunday, December 5, 2010 at 6:52pm

6215 is the right answer. What were the steps without a calculator? Thanks!

• algebra -

you have to evaluate e^(-5) can be done, by this method (1/e)(1/e)(1/e)(1/e)(1/e) That would be fun multiplying without a calculator.

## Similar Questions

1. ### Algebra

These data represent the population of a certain city. Year Population(in thousands) 1950 18 1960 23 1970 29 1980 32 1990 38 2000 42 Use the line graph to predict the population in the year 2010 I recommend graphing the points, draw …
2. ### College Algebra

Find a linear equation in the form P = mt + b (y = mx + b), which gives the population, p, t years from 2010. This scenerio is based on a population of 6,000 in the year 2010, and increases by 200ppl every year. Please show the work …
3. ### algebra

Find a linear equation in the form P = mt + b (y = mx + b), which gives the population, P, t years from 2010. This is based off of an initial population of 6,000 in 2010, with a growth of 200 ppl per year. Please show work
4. ### reiny

How do I find a variance for a set of numbers {1,16,8,17,12} I got that variance-34.2, but I'm unsure. Any help?
5. ### algebra

the population P(t) of a new residential development t years after 2010 is P(t)=8000(1-e^-0.3). What is the population for 2015?
6. ### math

can please someone check my answer Q.) 30% of the adult population was offline in terms of being able or willing to access the internet. New data relating to the year 2010 (sourced from The Office for National Statistics) indicated …
7. ### Trigonometry

In 2010, the population of a country was 70 million and growing at a rate of 1.9% per year. assuming the percentage growth rate remains constant express the population P, as a function of t, the number of years after 2010.
8. ### algebra

For the years 2010 to 2050, the projected percentage P of the U.S. population that will be 18 to 24 years old during year t is estimated by P= -0.025t+ 60.35. complete the table t 2010 2020 2030 2040 2050 p use the table to find the …
9. ### Algebra

Suppose the growth of a population (in thousands) is represented by the expression 32 * 2.1^x where x represents the number of years since 2010. Evaluate the expression for they year 2015. Round to the nearest whole number. A. 41 B. …
10. ### Algebra 1

Suppose the growth of a population (in thousands) is represented by the expression 32*2.1^x, where x represents the number of years since 2010. Evaluate the expression for the year 2015. Round to the nearest whole number. a. 41 b. …

More Similar Questions