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Tutors Answer Your Questions about Functions (FREE)
Question 126702: Hey again..
I'm working on the section inverse relations and functions and have a question. Heres the problem.
Find the inverse of the function y=4x-7. Is the inverse a function?
I found the inverse... its y=x+7/4 I just dont know if its a function or not?
Thank you for helping
Click here to see answer by stanbon(26297)   |
Question 126702: Hey again..
I'm working on the section inverse relations and functions and have a question. Heres the problem.
Find the inverse of the function y=4x-7. Is the inverse a function?
I found the inverse... its y=x+7/4 I just dont know if its a function or not?
Thank you for helping
Click here to see answer by bucky(1732) |
Question 126704: Hello
I have a question on my homework about inverse relations and functions. this is the question.
Find the inverse of y=sqrtx+9 Is the inverse a function?
I think i found the 1st part which is y=x^2-9 but i dont know if the inverse is a function?
Thanks for the help!
Click here to see answer by stanbon(26297) |
Question 127417: suppose 2.4 million lbs of almonds are sold when the price is $5.50 per pound and 4.8 million lbs of almonds are sold at $4.50 per pound. find a linear function, A(p), that expresses the amount of almonds sold as a function of the price per pound.
Click here to see answer by stanbon(26297) |
Question 128704This question is from textbook Fundamentals of Algebric Modeling
: Just wanted to see if I had this one right
10. The population of Windham is growing at an annual rate of 0.5%. If the current population 12,520, one function that can be used to predict the future population of Windham is P(t) = 12,520(1.005)t where t represents time in years. Use this function to predict the population of Windham in 10 years.
My answer is
P(t) = 12,520(1.005)T
P (10 * 0.5%) = 12,520(1.005)t
P(5) = 12,582.6(5)
P(5) = 62,913This question is from textbook Fundamentals of Algebric Modeling
Click here to see answer by checkley71(8405) |
Question 128892: I have a questions dealing with Logarithmic functions. The question I am dealing with is:
We have all heard of carbon dating. Materials are tested for c14 to determine how long ago they lived. Here is how it works. Cosmic ray bombardment of the atmosphere produces neutrons, which in turn react with nitrogen to produce radioactive carbon-14. Radioactive C-14 enters all living tissues through carbon dioxide, which is first absorbed by plants. As long as a plant or animal is alive, C-14 is maintained in the living organism at a constant level. Once the organism dies, C-14 decays according to the equation A=A0e^-0.000124t where A is the amount present after t years and A0 is the amount present at the time of death. If 500 milligrams of C-14 (that is A0=500) are present in a sample from a skull at the time of death, how many milligrams will be present in the sample in 15,000 45000.00 60000 years. From your results, what can you conclude about using C-14 dating on bones from animals believed to exist 200,000,000 years ago? To be honest I am not even sure how to approach this question. Any help will be greatly appreciated. Thanks everyone.
Click here to see answer by stanbon(26297) |
Question 128933: I am studying for a college algebra test and have hit a wall with this question:
Let f(x)= x^3-8x^2+17x-9. Use the factor theorem to find other solutions to
f(x)-f(1)=0, besides x=1.
Can you please explain how to solve this question, I am going to college via online and have to teach myself from the book and I have been doing well thus far, but am struggling to understand some questions in the Polynomial and rational function section. Thank you so much for your time and help. It is very much appreciated!
Click here to see answer by oscargut(682)  |
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