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

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Algebra: Functions, Domain, NOT graphing

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Question 132987: If f(x) = (x + 48.2)3, what does f−1(−8) equal?

Click here to see answer by vleith(1977)

Question 133019: Could someone please help me understand & solve this problem.
Let A={-3,-2,-1,0} Let B={0,1,2,3} Find A U B
Thank you.
Click here to see answer by vleith(1977)

Question 133021: Could I please have some help with the following problem.
Let P={-3,-2,0,1,5} Let T={0,1,6,9} Let S={-3,1,6}
Find T and S
Find P and T
Click here to see answer by stanbon(26297)

Question 133029: Could I have some help understanding how to solve this & what the n stands for. Thank you. A={2,4,6} B={-3,-2-1,0} Find n of A and B.
Click here to see answer by stanbon(26297)

Question 133053: What is the inverse of
(3,6),(4,1),(2,-3)?
Click here to see answer by nycsharkman(136)

Question 133020: I would appreciate some help with the following problem & how to work/solve it. Thank you. If Y= {1,2,3} find Y n 0
Click here to see answer by vleith(1977)

Question 133201: the height of a triangle is 2 more than twice the base. the area is 20 square feet find the base

Click here to see answer by vleith(1977)

Question 133401: Hi My Name is Michael I am trying to pass this class
My Problem is U=-gmM/r I need to solve for M Do I start by Adding U to both sides?
If so how? If not how do i start?
The Book apears to be a new printing which also has a secondary
ISBN of 10 0-13-220164-x
In any case its name is Elementary Algrebra By Jay Leymann Distributed by Pearson through Prentis Hall
Click here to see answer by jim_thompson5910(13794)

Question 133680: find the position of a vertex for the graph of the function f(x) = x to the second power+6x+7
am desperate!!
Click here to see answer by scott8148(3385)

Question 133675: Write a slope-intercept equation for a line passing through point (4,1) and parallel to line y=3x+5
I'm desperate for a quick answer!
Click here to see answer by scott8148(3385)

Question 133876: How do you find the domain and range of an equation?
Click here to see answer by cuteminiming(5)

Question 133968: It's been a few years since high school and I am taking an online algebra course and am having difficulty remembering how to do function fºg and the textbook is very vague. This is the problem:
Find the domain of the composite function fºg
f(x)=√x; g(x)=4x+4
Click here to see answer by Earlsdon(4900)

Question 133982: I am having difficulty with functions please help!!
Find functions f and g so that h(x)=(fºg)(x)
h(x)=6/x² + 8
Click here to see answer by solver91311(5072)

Question 133984: Ok I've been working this problem for about 30 minutes and need your help.
Find the domain of the function
h(x)=x-3/x³-16x

Click here to see answer by nycsharkman(136)

Question 133948This question is from textbook

: Find the MINIMUM VALUE of Y if: Y = x^2 - 8x + 9This question is from textbook

Click here to see answer by checkley71(8405)

Question 134141: I am struggling with this synthetic division problem, the answer I am coming up with is not what the book answer is, help:
5x²-31x+30
Click here to see answer by nycsharkman(136)

Question 134150: Please help me with the following problem:
Solve the problem. Solve the equation 12x³-77x²+91x-30=0 given that 2/3 is a root

Thanks in advance
Click here to see answer by solver91311(5072)

Question 134152: I am pulling out what hair I have left, please help me:
Divide using long division:
(12x²-35x+8)/(4x-1)
Click here to see answer by solver91311(5072)

Question 134221: Hello-Please help!
I am just not grasping the concept of functions.
Find the requested value.
f(3) for f(x)={3x+1, if x<1
3x, if 3 (less than or equal to sign)x (less than or equal to
sign) 8
3-5x, if x>8
Everything after the equals sign is enclosed by one bracket. THANK YOU very much!
Click here to see answer by jim_thompson5910(13794)

Question 134357: Please help-I am so confused! Thank you for your help!
Find the indicated composite for the pair of functions.
(g*f)(x): f(x)=x-3/6, g(x)=6x+3

Click here to see answer by jim_thompson5910(13794)

Question 134469: The relation:
-3x+4y^3=9
what does it represent a function, not a function, an even or odd function or a graph symmetrical with respect to the origin.

Click here to see answer by stanbon(26297)

Question 134680This question is from textbook College Mathematics
: The question reads:
Find and simplify:
[f(a+h)-f(a)]/h where f(x)=1/x
What I think I'm to do would be to replace "f" with 1/x
Thank you for your help with this problem.This question is from textbook College Mathematics

Click here to see answer by rajagopalan(125)

Question 134704: The function f(x) = -2x^3 is
The function f(x) = 5x^3
The function cube root of (-4x^3-6)
pls are these functions even or odd.
Please i need an urgent answer if possible now
Thanks
Click here to see answer by stanbon(26297)

Question 134707: f(x)=1/x^4+3x^3 even or odd
i need answer urgently pls

thanks
Click here to see answer by stanbon(26297)

Question 134706: f(x)=3x/absolute x
pls is this function even or odd.
Please i need an urgent answer if possible now
Thanks
Click here to see answer by stanbon(26297)

Question 134683: Find the domain and range of the quadratic equation f(x)=x^2-8x+9.
Click here to see answer by stanbon(26297)

Question 134742: The function defined by f(x)=3x-2 was used to encode the following message:
37 25 19 61 13 34 22 1 55 52 52 25 64 13 10
Find the Inverse function and decode the message
Click here to see answer by vleith(1977)

Question 134871:
Thanks for the answers for the previous questions. Pls, am having difficulty with these ones. I need your help. it's very urgent

4x^3 - 5x. is it even, odd, or neither?

-4x^2 - 5. is it odd, even or neither?

f(x) = -4x divided by |5x|. is it odd, even, or neither?

-2x^3 divided by 7x^2 + 8. is it odd, even, or neither?

f(x)= 8x^3 + 3. is it odd, even, or neither?

Click here to see answer by stanbon(26297)

Question 135098: please, I need your help in thi. it is urgent.
I really don't know the range of f(x)= x^2/3 + 2

Click here to see answer by ankor@dixie-net.com(6693)

Question 135102: please, I need your help in this. it is urgent.
I really don't know the range of f(x)= x^2/3 + 2

Click here to see answer by vleith(1977)

Question 135280: HELP, please!
For the given function, find all asymptotes of the type indicated (if there are any).
f(x)= x-9/x^2-4, vertical
Thank You!
Click here to see answer by solver91311(5072)

Question 135259: Please help with the inverse of the one-to-one function
f(x)= cubed sqrt (under square root is x-6)
Click here to see answer by stanbon(26297)

Question 135229: find the domain of 2x+3=-3(x-1)
Click here to see answer by edjones(3299)

Question 135370: I have no Idea were to start with this problem, can you please help with this function?
In 1990, the life expectancy of males in a certain country was 70.2 years. In 1997, it was 72.7 years. Let E represent the life expectancy in year t and let t represent the number of years since 1990.
The linear function E(t) that fits the data is
so fair I came up with
E(t)= _t +_.
please help!!
Click here to see answer by stanbon(26297)

Question 135413: Find g(a+1) when g(x)= 1/4x - 3.
Click here to see answer by nycsharkman(136)

Question 135515: Function f is one-to-one. Find it's inverse.
f(x) = 3/5x-4 (3 devided by 5x-4).
I thought you were supposed to flip flop the problem which would make it:
f(x) = 5x-4/3 (5x-4 devided by 3) That was incorrect.
Can you please help? Thank you.
Click here to see answer by vleith(1977)

Question 135662: f(x)=-2x^2+11x+7
find the line of symmetry of the given function.
Click here to see answer by solver91311(5072)

Question 135662: f(x)=-2x^2+11x+7
find the line of symmetry of the given function.
Click here to see answer by stanbon(26297)

Question 135661: find the range of the given function.
f(x)=-2x^2+7x+6
Click here to see answer by nycsharkman(136)

Question 135693: if f(4)=0 and f(6)=6, which of the following could represent f(x)?
A. 2/3x-4
B. x+2
c. x-4
D. 3x-12

could u show me how to work this out and find the answer?
Click here to see answer by vleith(1977)

Question 135966: Please help me with these...thank you
The function, p(d) = 1 + d/33 gives the pressure, in atmospheres (atm) at a depth d in the sea (d is in feet). Note that p(0) = 1 atm, p(33) = 2, and so on. Find the pressure at 110 feet.
The pressure at 110 feet is ? atm.
(type an integer or a simplified fraction)
Click here to see answer by solver91311(5072)

Question 135969: Please..i am having a lot of trouble with these. any help would appreciated.
f(x) = 7/|5x-9|
g(x) = 8/3-7x

Click here to see answer by solver91311(5072)

Question 135967: Please help me with these...thank you
The function, p(d) = 1 + d/33 gives the pressure, in atmospheres (atm) at a depth d in the sea (d is in feet). Note that p(0) = 1 atm, p(33) = 2, and so on. Find the pressure at 110 feet.
The pressure at 110 feet is ? atm.
(type an integer or a simplified fraction)
Click here to see answer by ankor@dixie-net.com(6693)

Question 136113: please i need urgent help here. pleaseeeeeeeeeeee
The height of an object propelled upward from a height of 128 feet at an initial velocity of 112 feet per second is given by the equation h = -16t2 + 112t + 128. After how many seconds does the object hit the ground?

Click here to see answer by vleith(1977)

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