259 Answered Questions for the topic Exponential Functions

Exponential Functions

05/25/15

How to write a formula for a logging company that cuts down 10% of acres per year and replants 10,000 acres each year

starting acres of 200,000
Exponential Functions

05/21/15

what kind of situation does an exponential function represent ?

 compare a situation that you could use an exponential function to represent, to situations for which you would use another function .
Exponential Functions

05/19/15

What is a table of values that I can use for this equation?

Y=10-9^(x-3)
Exponential Functions

05/16/15

Graphing Exponential Functions

y=2x-4     y=2x+4   I'm confused by one being exponents but one isn't. How do I graph these? I try different x values like -1 and -2 but they don't appear similar to the answer in the book.     more
Exponential Functions

05/06/15

y + 2 = f(x + 4)

The graph of y = f(x) = bx, where b > 1, is translated such that the equation of the new graph is expressed as y + 2 = f(x + 4). The domain of the new function is
Exponential Functions Word Problem Exponential Decay

05/05/15

It is an exponential decline question

The sales, S, of a product have declined in recent years. 1.8 million were sold in 2009 but only 1.2 million sold in 2012. Assume the sales are decreasing according to the exponential model... more
Exponential Functions

05/01/15

Involves exponential and log functions

The temperature, T ( Degree C), of a quenched steel plate at time t is given by T = f(t) = 10 + 85/1 + e^ (t−60)/10 where 0 ≤ t ≤ 100 measured in seconds. (a) We want to know when the temperature... more
Exponential Functions Derivatives

04/30/15

NEED ANSWERED ASAP Derivatives of exponential functions

a rumour spreads in such a way that t hours after the rumour starts, the percent of people involved in passing it on is given by P(t)=100(e-t- e-4t). what is the highest percentage of people... more
Exponential Functions Coordinates Derivatives

04/30/15

NEED ANSWERED ASAP Derivatives of exponential functions

Determine the points on the interval [0, 2π] where f(x)= esinx+cosx 

04/30/15

NEED ANSWERED ASAP Derivatives of exponential functions

Determine the coordinates of all points at which the tangent to the curve defined by y=x2e-x is horizontal
Exponential Functions Derivatives

04/29/15

NEED ANSWERED ASAP! Derivatives of exponential functions...

determine the derivative of the following:    g(t)= e2t / 1+e2t

In an effor to control vegetation overgrowth, 82 rabbits are released in an isolated area Free of predators. After 2 years, it is estimated that the rabbit popu

In an effor to control vegetation overgrowth, 82 rabbits are released in an isolated area Free of predators. After 2 years, it is estimated that the rabbit population has increased to 328. Assuming... more

04/24/15

The value of a machine, V, at the end of t years is given by V=C(1-R)t , where C is the original cost and r is the rate of depreciation. Find the value of a mac

The value of a machine, V, at the end of t years is given by V=C(1-R)t , where C is the original cost and r is the rate of depreciation. Find the value of a machine at the end of 4 years if the... more

04/24/15

The revenue function is given by R(x) =x*p(x) dollars where x is the number of units sold and p(x) is the unit price. If p(x)=50(5)-x/5 find the revenue if 10 u

The revenue function is given by R(x) =x*p(x) dollars where x is the number of units sold and p(x) is the unit price. If p(x)=50(5)-x/5 find the revenue if 10 units are sold. Round to two decimal... more

04/22/15

Tessa invests $7200 in a new savings account which earns 5.5% annual interest, compound quarterly. What will be the value of her investment after 7 years? Round

Tessa invests $7200 in a new savings account which earns 5.5% annual interest, compound quarterly. What will be the value of her investment after 7 years? Round to the nearest cent. 
Exponential Functions

04/19/15

Which of the following are exponential functions?

Which of the following are exponential functions? A. f(x)=1xB. f(x)=0.8x+1C. f(x)=(3.14)3xD. f(x)=(7/3)xE. f(x)=42xF. f(x)=−(2)xG. f(x)=(−2)xH. f(x)=x4
Exponential Functions

04/13/15

ln(x+5)3+12=21

ln(x+5)3+12=21If the answer is not an integer, enter it as a decimal. Round to the nearest hundredth, if needed.
Exponential Functions

04/13/15

If the answer is not an integer, enter it as a decimal rounded to the nearest tenth of a year, if needed.

Suppose $11,400is invested in a monthly compounded account at 4.98%. Approximately how long will it take for the balance to reach $25,650?If the answer is not an integer, enter it as a decimal... more
Exponential Functions

04/02/15

Find the number of bacteria present after 5 hours.

A certain type of bacteria grows according to the function f(t)=1,700e0.1732t,where Pis the number of bacteria present after t hours.Find the number of bacteria present after 5 hours.
Exponential Functions

04/02/15

Suppose $7,500 is compounded weekly for 26 years. If no other deposits are made, what rate is needed for the balance to double in that time? Round the answer to

Suppose $7,500 is compounded weekly for 26 years. If no other deposits are made, what rate is needed for the balance to double in that time?Round the answer to the nearest hundredth of a percent.
Exponential Functions

04/02/15

How much should be deposited in an account paying 5% interest, compounded quarterly, in order to have a balance of $ 9,000after 29years and 3months?

How much should be deposited in an account paying 5% interest, compounded quarterly, in order to have a balance of $ 9,000after 29years and 3months?
Exponential Functions

04/02/15

What was the interest rate as a percent?

Suppose $80,000 is invested into an account where interest is compounded monthly. After 30 years, the balance is $637,803.What was the interest rate as a percent?
Exponential Functions

04/02/15

Find the number of bacteria present after 6 hours.

A certain type of bacteria grows according to the function P(t)=1,000e0.1912t,where P is the number of bacteria present after t hours.Find the number of bacteria present after 6 hours.
Exponential Functions

03/27/15

pop of town increases 5.4% every year. 30 thousand people in 1980 whats the model to describe growth condition

I wrote it is exponential growth and the model is f(x)=30 times 5.4%^x     When I plug in numbers in the model  for x it does not match what    I have  in the table I made.  For instance in... more
Exponential Functions Exponents

03/19/15

Suppose an investment of $10,000 doubles in value every 13 years. How much is the investment worth after 52 years? After 65 years? Show your work.

This question is confusing to me... i don't really understand how to write a function based on the information given.

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