259 Answered Questions for the topic Exponential Functions

Exponential Functions

05/22/16

How much chlorine is in the pool after 2 days?

Chlorine is frequently used to disinfect swimming pools. The concentration should remain between 1.5 and 2.5 parts per million. on a warm, sunny day, 30% of the chlorine can dissipate into the air... more
Exponential Functions Algebra

05/16/16

(5 + (24)^1/2)^x + (5 - (24)^1/2)^x = 10 , solve for x

24^1/2 means 24 to the power 1/2
Exponential Functions

05/08/16

Exponential Functions

find an exponential function of the form f(x)=ab^x that passes through the given points: (1,1), (2, 2/5), (3, 4/25)
Exponential Functions Math Algebra Math Help

04/25/16

Find an exponential function of the form f(x)=a^x which passes through the points (0,1) and (2,81).

A. 9x2 B. x9 C. 3x D. 9x E. None of the above
Exponential Functions Algebra Math Help Logarithms

04/22/16

Solve each of the following equations.

Solve for x. (Note: Further simplification may occur in step (b).) Write the answer in terms of natural logarithms, unless no logarithms are involved. Rewrite the answers to each individual... more
Exponential Functions Math Algebra Math Help

04/22/16

Solve each of the following equations. Write all answers in simplest form.

log6x+log6(x+1)=1   log6(x+2)+log6(x+3)=1
Exponential Functions

04/22/16

Find the exponential function that satisfies the given conditions

Initial value=55, decreasing at a rate of 0.42% per week
Exponential Functions Math Algebra Math Help

04/18/16

Find an exponential function of the form f(x)=a^x which passes through the points (0,1) and (2,81).

A. f(x)=9x^2 B. f(x)=x^9 C. f(x)=3^x D. f(x)=9^x E. None of the above
Exponential Functions Precalculus Exponential Decay

04/12/16

Exponential Functions

1. Scientists have observed that living matter contains, in addition to carbon, C 12, a fixed Percentage of a radioactive isotope of carbon, C14. When the living material dies, the amount of C12... more
Exponential Functions Math Help

04/09/16

What's the value of f(-2)?

An exponential function is given in the form f(x)-a*bx. If f(0)=3 and f(1)=15, what's the value of f(-2)?
Exponential Functions

03/30/16

write a linear model and an exponential model.

Also use those to estimate the attendance in 2000 and in 2010. compare those results to the actual population  

03/28/16

How can i find b?

A 43 mg of a vaccine is given to a patient to prevent measles. The vaccine leaves the body at a rate of5.2% per hour. b-The number of milligrams of vaccine in the body after h days is how many... more
Exponential Functions

03/13/16

FInd the Domain of this exponential function

y= -9 x 7x
Exponential Functions

03/12/16

What is the function given the table below.

X           Y   -4          243/16 -3           81/8 -2           27/4 -1             9/2  0               3

03/10/16

The voltage V across a charged capacitor is given by V(t)6e(-.26)t volts, where t is in seconds.

The voltage V across a charged capacitor is given by V(t)6e(-.26)t volts, where t is in seconds.   (a) What is the voltage V(6) after 6 seconds? Find the time t when the voltage will be 1... more
Exponential Functions Word Problem Pre Calculus College Algebra

03/10/16

Finding the Actual Doubling Time (Logarithms and Exponential Models)

This problem involves the Rule of 70, which gives quick estimates of the doubling time of an exponentially growing quantity. If r% is the annual growth rate of the quantity, then the Rule of 70... more
Exponential Functions

03/08/16

What are the awnsers to p.450-452

I dont understand

02/28/16

Exponential Growth Problem Involving bacteria population??! PLEASE HELP!!! - Precalculus

I am really stuck on this question, particularly questions 3 and 4. Could you please show how you get the answers to those questions and explain? I have been stuck on those for a while and would... more

02/26/16

The count in a bateria culture was 100 after 15 minutes and 1800 after 30 minutes.? Find the population in 95 minutes? EXPONENTIAL GROWTH PROBLEM!? PLEASE HELP

The count in a bateria culture was 100 after 15 minutes and 1800 after 30 minutes. 1. What was the initial size of the culture? Round your answer to the nearest bacteria. 2. Find the doubling... more
Exponential Functions

02/16/16

At the beginning of an environmental study, a forest covered an area of 1500 km2 . Since then, this area has decreased by 1.7% each year.

Let t  be the number of years since the start of the study. Let y be the area that the forest covers in km2.Write an exponential function showing the relationship between y and t. 
Exponential Functions

02/10/16

ore sample containing 500 mg of radioactive material radioactive material has a half life of 1 day.

i need to know how to solve this.
Exponential Functions

01/18/16

Determine the equation of the exponential function with points (3,3), (4,2) and (5,0).

I don't understand how to determine this without a graph. Could you show steps?
Exponential Functions

01/08/16

How much would $400 be worth after 6 years, if it were invested at 2% interest compounded annually? (Use the formula below and round your answer to the nearest

A(t)= P(1+r/n)^nt   A. $451.00 B. $450.00 C. $468.01 D. $450.46
Exponential Functions

12/02/15

Determine an exponential function of the form y=Cb^x

The graph has the points (0,-2) and (1,-6).
Exponential Functions

11/23/15

What would the exponential equation be?

(-1,1.25) and (3,0.032) Thanks

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