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Tutors Answer Your Questions about Exponential-and-logarithmic-functions (FREE)
Question 203504: The consumer price index compares the cost of goods and services over various years. The same goods and services that cost $100 in 1967 cost $148.50 in 1977. Assuming exponential growth, find the value of these same goods and services in 1999.
After what period of time did the same goods and services cost double that of 1967?
Hint: x.xx years
can someone help please
Click here to see answer by stanbon(26259)   |
Question 203505: A rectangular box with not top is to contain 2250 cubic inches of volume. Find the dimensions of the box that will minimize the surface area. The length (l) of the base is three times the width (w)
w= inches
h= inches
l= inches
not sure what I am doing wrong but I am having any luck can someone please thanks
Click here to see answer by scott8148(3382)  |
Question 203881: Hello,
Here is the question that I have to answer. I am totally lost!! I have read the book over and over again and cannot figure this out.
1. Give an example of an exponential function. Convert this exponential function to a logarithmic function. Plot the graph of both the functions.
I am guessing but I think that an example of an exponential function would be e^2-13=x. I have no idea how to then convert this to a logarithmic function and to plot a graph. Please someone help break this down for me to understand. I want to learn it!! Thank you in advance for your time.
Colleen
Click here to see answer by Alan3354(6059)  |
Question 203895: Having trouble figuring this out- I know what to do but not sure how to format with the sqrt 1+x.
Here is the question
Find the volume generated by revolving about the x-axis the regions bounded by the following graphs:
y= sqrt 1+x
x= 2
x= 9
thanks
Click here to see answer by jsmallt9(590) |
Question 204144: Please help with this one. I need assistance with word problems. I need to pass this class. Thanks in advance.
A cell divides into two identical copies every 4 minutes. How many cells will exist after 5 hours?
Click here to see answer by scott8148(3382) |
Question 204146: Please help me with this one. I had a difficult time trying to do this one. I don't think that I have the right set up. Thanks in advance.
The level of thorium in a sample decreases by a factor of one-half every 2 million years. A meteorite is discovered to have only 8.6% of its original thorium remaining. How old is the meteorite?
Click here to see answer by scott8148(3382) |
Question 204142: Can anyone help me with this one? I am have a hard time figuring this one out. I really need your help to pass this class. Thanks in advance.
True or false: The function "f(x) = 4x" grows four times faster than the function "g(x) = x". Explain.
Click here to see answer by RAY100(1637) |
Question 204141: Could anyone help me with this. I am not sure how to do it. I really need your help.
Do exponential functions only model phenomena that grow, or can they also model phenomena that decay? Explain what is different in the form of the function in each case.
Click here to see answer by Earlsdon(4898) |
Question 205515: In 2000, the population of Isreal was approximeatly 6.04 million and the population of the Palestinians in the West Bank, Gaza Atrip, and East Jerusalem was approximately 3.2 million in 2050 Israel is projected to grow to 10 million and the population of Palestinians to 12 million.
Use the exponential growth mdoel A=A(subscript, 0)e^kt, in which t is the number of years after 2000 to find an exponential growth function that models the data for the Israeilis and growth function that models the data for the Palestinians. n which year will each of the populations reach 9 million??
This is a long one...I know I am sapose to use the continuous growth model but I dont really know what numbers go in what spot to make an equation!..
help?
Click here to see answer by stanbon(26259) |
Question 205614: In 2000, the population of Isreal was approximeatly 6.04 million and the population of the Palestinians in the West Bank, Gaza Atrip, and East Jerusalem was approximately 3.2 million in 2050 Israel is projected to grow to 10 million and the population of Palestinians to 12 million.
Use the exponential growth mdoel A=A(subscript, 0)e^kt, in which t is the number of years after 2000 to find an exponential growth function that models the data for the Israeilis and growth function that models the data for the Palestinians. In which year will the Israeli and Palestinian populations be the same??
Click here to see answer by stanbon(26259) |
Question 209826: could someone please help.I posted these about 4 days ago,but got no response.Thanks
find the equation for f^-1(x)
1. f(x) = -3x
2. f(x) = x-7
3. f(x) = (-2/5)x + 10
4. f(x) = x^2 + 1
rewrite as logarithmic equations.use your calculator to solve for x.round to the nearest thousandths.
(a) 9^x = 60
(b) 4^3x = 100
(c) 6^(x+2) = 42
compute
1. (4 X 10^4)(7 X 10^-6)
2. (2 X 10^-4)divided by (8 X 10^-9)
thank you so much for the help.I really appreciate your time and effort.Sarah
Click here to see answer by nyc_function(260)  |
Question 210048: please help.
write the equations in logarithmic form
1.4^8 = 65,536
2.10^4 = 10,000
3.2^x = 8
4.a^x = b
Thanks for your time and help.I really appreciate it.Let me assure you that I am not a student seeking homework answers.I am a homeschooling mom.
Click here to see answer by tutor_paul(424)  |
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