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Tutors Answer Your Questions about Rational-functions (FREE)
Question 6507: I am having a hard time answering the following problem. Any assistance would be much appreciated.
Problem: The function f(t) = 9.7*e^(0.003*t)) models the population of a certain city f(t), measured in millions, t years after 1990. If the population growth rate continues into the future, when will the population reach 14 million?
Click here to see answer by Mike(39)   |
Question 6589: I am having trouble figuring out if the following equation has point discontinuity, vertical asymptote, or both. 
(I couldn't figure out how to edit it to show this to you, but it is not 24/x, rather it is x^2 - 10x + 24 ALL over x + 9.)
Thanks
Click here to see answer by ichudov(404)  |
Question 7326: Determine whether y varies directly with x. If so, find the constant of variation k and write the equation.
x
6
18
54
162
y
24
72
216
648
Options are: a. Yes k=4; y=4x b. yes, k = 3; y=3x c. yes, k=6; y= 6x d no
Ok, please tell me how to solve this problem and plus can u explain to me wht is direct variation? coz i believe this question's got sth to do with it.............thanks a lot!
Click here to see answer by longjonsilver(2297)  |
Question 8544:  How do you find the domain of f(x)=(square root)x+3?
I do not fully understand which way the domain goes. When I graph the equation I come out witha graph which starts at (0,3)and continues on to the right for infinity. The answers that I to choose from are [3,0) and(3,0). I guess my real question is, how do I know which to choose from, the bracket or the parenthese?
Click here to see answer by rapaljer(3622) |
Question 9443: Whitney'S Appliances is having a sale on 13 TV sets. They are displayed in order of increasing price from left to right. The price of each set differs by $20 from either set next to it. For the price of the set at the extreme right, a customer can buy both the second and seventh sets. What is the price of the least expensive set?
Click here to see answer by rapaljer(3622) |
Question 9438: The task is to determine a relationship between the height that the tennis ball is dropped to the height that it bounces.
The variables include:
Independent variable (what you choose to change).
________________________________________________
How are you going to measure this.
________________________________________________
Dependent variable (what is affected by your chosen change).
____________________________________________________________
How are you going to measure this.
__________________________________
Number of trials that needs to be performed. (And explaining why that many trials)
Please explain exactly what you are going to do. By using a step-by-step set up.
If you would.
As well as creating a data table that will allow you to display the information that you have collected in an easy to understand format.
In the end,please, summarize the data that was collected and the sources of the errors that were found. Thank-you for being a dedicated tutor.
Click here to see answer by prince_abubu(198) |
Question 11826: hi im having trouble on this problem. "graph the line perpendicular to the graph of 3x-2y=24 that intersects it at its x-intercepts." what i did was get the equation into the yintercept form i think its called like that. y=-12+3/2x. the x-intercept is 3/2 right? and i plot the -12 on the graph right? now i dont know what to do. thank you
Click here to see answer by longjonsilver(2297) |
Question 11824: the questions asks "determine whether the diagonals of parallelogram ABCD are perpendicular. explain your answer." the parallelogram's points are A=(5,0) B=(9,0) C=(10,-4) D=(6,-4) i do not know what to do. i have not dont parallelograms before i have just dont lines. thanks for all your help
Click here to see answer by longjonsilver(2297) |
Question 12341: Please I need a step by step strategy for adding and substracting rational expressions that have different denominators. In addition, please provide an example problem. Please I need to understand this for a test tonight.
Click here to see answer by askmemath(368) |
Question 13925: Can you tell me which answer is correct for this problem - find the following for the function F(x)=-x^2+3x-1 ; -f(-x)
A.x^2+3x+1(do you have to do the whole equation with a "-x" plugged in for "x" and then multiply your whole answer by -1(derived from the -F))
B.-x^2+3x-1(can't you just cancle the negatives in the "-f(-x)" to be "f(x)"
Thank you for all of your time and help.
Click here to see answer by Earlsdon(4900) |
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