Questions on Algebra: Functions, Domain, NOT graphing answered by real tutors!

Tutors Answer Your Questions about Functions (FREE)

Question 62155: I need some help on this one. I am not sure it is in the right area.
Graph each quadratic function:
f(x) = 1/2x^2 - 2

Then of course has to be graphed. Thanks for your help.
Click here to see answer by ankor@dixie-net.com(15649)

Question 61599: The simple intrest I on a principal of P dollars at an intrest rate R for time T in ten years is given by I = PRT find the simple intrest on a principal of $6000 at 3% for 2 years.
Click here to see answer by 303795(595)

Question 62198: Please help me solve this problem!!!
Volume of a rectangular prism...

Solve for h V=lwh

thanks for your help
Click here to see answer by tutorcecilia(2152)

Question 62184: Find the formula for the inverse of f(x)=(x+7)cubed
Click here to see answer by ankor@dixie-net.com(15649)

Question 62271: Find the domain of f(x)= (2x + 3)/(2x^2 - 3x - 27). Leave your answer in interval notation.
Click here to see answer by funmath(2925)

Question 62369: I really need some help on this one.
Let the function of f be defined by the equation y = f(x), where x and f(x) are real numbers. Find the domain of each function.
f(x)= x+2/x-1
I hope that is clear enough to explain the question. Thanks in advance
Click here to see answer by funmath(2925)

Question 62358: How Do you "Find the Slope of the graph of the linear function f"?
Click here to see answer by funmath(2925)

Question 62409: Kindly help me with the following .

Mercy, the chief financial analyst of NQL ltd whishes to develop a model to assist NQL in projecting its monthly profits. Mercy conducted a study that provided the following data
Month July 2006 August 2006 September 2006 October 2006
Profit ($ M) 104 113 122 132
1. Which model linear or exponential best describes the pattern of NQL’s Monthly profit
2. Find the expected profit for Dec. 2006 using the selected model in (1)

2. Find the expected profit for Dec. 2006 using the selected model in (1)

Click here to see answer by stanbon(57307)

Question 62167: Find the vertex, axis of symmetry, maximum value or minimum value, x and y intercepts.
f(x)=-3/11(x-7)2-9
Click here to see answer by stanbon(57307)

Question 62408: please assist ( anyone please help )
Bush juices (BJ) Lts and Wild Tates (WT) Ltd. Produce and sell natural fruit juices. BJ, at the beginning of October 2006, conducted a study to establish its market share vis – a-vis that of NT, the only other competitor in natural fruit juice market. The study-involved observation of loyalty shifting habits of a total pool of 19200 natural fruit juice consumers, distributed equally between the two companies. Records by the end of the month indicated that 2400 consumers had switched from BJ to WT and half of WT ‘s had shifted to BJ. The total consumer pool is expected to grow to exponentially, at the rate of 10 % per month, up to the end of June 2007 after which it is expected to stabilize with negligible growth thereafter Each consumer of natural fruit juice, generates an average monthly revenue of 400 $ to the selling company.
Assuming that the October 2006 shift pattern persists into the future months, determine the expected revenue generated by each company during
1. November 2006
2. December 2006
3. Any month at equilibrium

Click here to see answer by stanbon(57307)

Question 62548: Please help me, I am having trouble finding the domain of these two equations
f(x)= x+5/x+3
and f(x)=x^2-4/x^2-9
Click here to see answer by funmath(2925)

Question 62554: Can you please tell me the Domain of this equation?
g(x)=squareroot(x+2)
I'm not familiar with writing the square root sign (the check mark) so I wrote the word out. Thanks
Click here to see answer by funmath(2925)

Question 62552: Please help me find the Domain of this equation.
h(x)=x^3-4x+5
Thanks in advance
Click here to see answer by funmath(2925)

Question 62555: Find the Domain and Range of the function: 1/x^4.
Click here to see answer by uma(370)

Question 62555: Find the Domain and Range of the function: 1/x^4.
Click here to see answer by Edwin McCravy(8908)

Question 62556: Find the Domain of y=(5+2x)/(x+5)
Click here to see answer by uma(370)

Question 62558: Given f(x) = x^2-3 and g(x)=2x+1, find:
(f/g)(-Square root of 3)
Click here to see answer by Nate(3500)

Question 62580: Let f(x)= 2x-3 and g(x)= x^2+2x find the following expressions

f(1)
g(-2)
f(3a)
f(3)+g(4)
Thanks for the help.

Click here to see answer by funmath(2925)

Question 62557: Find the Domain of the function:
(x^4 - 2x^2 +7)/ (3x^2 -10x -8)
Click here to see answer by funmath(2925)

Question 62595: Pls I need help with this also
Specify the domain and range of the relation
x^2/18+(y-4)^2/4=1/2
Click here to see answer by venugopalramana(3286)

Question 61362: I want to make sure i am doing this correctly... Question is: Determine ALL REAL ZEROS (and multiplicities for them) for the following polynomial functions.
f(x)=x^4-6x^3+13x^2-24x+36
I went to the tutor here at school, and it seemed like the kid did not know what the correct answer would be... I have..
Real Zeros= x=3
but i don't think i am right.. Please help.. Thanks again..

Click here to see answer by 303795(595)

Question 62647: Please help me find the values for the functions below given the following piece wise function.
F(x)=
2x if x <-3
x + 5 if -3 <= x < 5
10-3x if x >= 5

f(8)
f(-8)
f(1)
Click here to see answer by stanbon(57307)

Question 62652: Given that f(x)=│x│, describe (or draw)how the following transformations change f(x).
1. g(x)=-│x│
2. h(x)= │x+3│
3. j(x)= │x│+3
Click here to see answer by stanbon(57307)

Question 62670: Please help me find the values for the functions below given the following piece wise function.

F(x)= 2x if x <-3, F(x)= x + 5 if -3 <= x < 5, and F(x)=10-3x if x >= 5
Find the values for these function
f(8)
f(-8)
f(1)
Thank You in advance
Click here to see answer by uma(370)

Question 62688: 9x _ 7 _ 5x _ 3
Click here to see answer by checkley71(8403)

Question 62685: _3x _ 27
Click here to see answer by checkley71(8403)

Question 62695: A=1/2 h(B _ b) (for b) Area of a trapezoid
Click here to see answer by joyofmath(189)

Question 62697: The sum of two consecutive integers is 145. Find the two
integers.
Click here to see answer by joyofmath(189)

Question 62696: Rose’s garden is in the shape of a trapezoid. If the height of the trapezoid
is 16 m, one base is 20 m, and the area is 224 m2, find the length of the other base.
Click here to see answer by checkley71(8403)

Question 62701: Jose has savings accounts for each of his five children.
They contain $215, $156, $318, $75, and $25. Find the median and the mean
amount of money per account.
Click here to see answer by checkley71(8403)

Question 62700: The Randolphs used 12 more gal of fuel oil in October
than in September and twice as much oil in November as in September. If they
used 132 gal for the 3 months, how much was used during each month?

Click here to see answer by checkley71(8403)

Question 62698: Yuri has a board that is 98 in. long. He wishes to cut the board into two
pieces so that one piece will be 10 in. longer than the other. What should the length
of each piece be?
Click here to see answer by joyofmath(189)

Question 62735: If the inventor in Exercise 53 charges $4 per unit, then her profit for producing and selling x units is given by the function:
P(x) = 2.25x – 7000
a. What is her profit if she sells 2000 units?
b. What is her profit if she sells 5000 units?
c. What is the break-even point for sales?

Click here to see answer by 303795(595)

Question 62742: help please! Let f(x)=x+2
write the function f(x)= |x+2| as a composition of the functions f and g.
Click here to see answer by funmath(2925)

Question 62686: 3/7x=15
Click here to see answer by jai_kos(139)

Question 62682: 12x _ 6 _ 11x
Click here to see answer by checkley71(8403)

Question 62684: 5x _ 8 _ 3x _ x _ 5 _ 6x _ 3
Click here to see answer by checkley71(8403)

Question 62799: 6x -1 2x = 3
5 3
Click here to see answer by checkley71(8403)

Question 62691: _4(2x _ 3)__8x _ 5
Click here to see answer by checkley71(8403)

Question 62851: I need some help with this one...can anyone help me out? Thanks!
Directions: Let the function f be defined by y = f(x), where x and f(x) are real numbers. Find f(2), f(-3).
f(x) = 3/x^2+3
Thank you!
Click here to see answer by praseenakos@yahoo.com(507)

Question 62926: How do you figure out the domain for x=y+1 for x={-2,-1,0,1,2}
Click here to see answer by venugopalramana(3286)

Question 63004: There are 850 Douglas fir and ponderosa pine trees in a
section of forest bought by Sawz Logging Co. The company paid an average of
$300 for each Douglas fir and $225 for each ponderosa pine. If the company paid
$217,500 for the trees, how many of each kind did the company buy?
Click here to see answer by stanbon(57307)

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