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

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Question 846257: 6(x+2)> 7(x-5)
Click here to see answer by Fombitz(32388)

Question 846618: Currently, the population of the US is 315 Million, with a national debt of approximately 17 trillion. Calculate the individual debt per person.
Click here to see answer by Fombitz(32388)

Question 846913: The range of a function f(x) = 4x-5 is (-1, 7) find its domain

Click here to see answer by Theo(13342)

Question 846810: y= x^2-x-6 / x^2+3x-18
Click here to see answer by Fombitz(32388)

Question 846777: What is the equation of the vertical asymptote and horizontal asymptote of the rational function:
f(x) = 8x^2+2x-3/ x^2-4x

Click here to see answer by Fombitz(32388)

Question 847058: How do you solve a function on a graph??
Click here to see answer by Fombitz(32388)

Question 846989: How do I write a rule for the following functions?
x -1,0,1,2
y 1,3,9,27

x -1,0,1,2
y 3,1,1/3,1/9
Click here to see answer by Fombitz(32388)

Question 847158: You are given the following function where f(0) = 2.
f(x) = (3x+66)/(2x-A)
Click here to see answer by ewatrrr(24785)

Question 847157: Express the area A of a rectangle as a function of the length x if the length is three times the width of the rectangle.
A(x) =
Click here to see answer by swincher4391(1107)

Question 847224: what is the domain of c=35n?

Click here to see answer by swincher4391(1107)

Question 847299: Choose the correct interval form for the RANGE of and then enter values for the endpoint(s) in the appropriate answer blank(s).
Let f (x) = − 2x2 + 12

(I got that the interval is (-infinity, 12]
Click here to see answer by ewatrrr(24785)

Question 847292: f(x) = −1/2x^2 − 2x + 5
is the function of a quadratic function.
1) Change f(x) into standard form and 2) Find the vertex

Click here to see answer by ewatrrr(24785)

Question 847632: (I'm really confused on this question, can someone please help)
Given f(x)=5+6x-x^2 find and simplify.

A)f(t-2)=____?
B)f(z+h)-f(z)=____?
C)f(b)+3=_____?
Click here to see answer by josgarithmetic(39618)

Question 847651: what is the domain and range of the function 135=3K+5H
Click here to see answer by swincher4391(1107)

Question 847652: Select the approximate values of x that are solutions to f(x) = 0, where
f(x)=-6x^2+2x+4

A: -.67,1.00
B: -6,2
C: -.33,-.67
D: -1.50,0.50
Click here to see answer by josgarithmetic(39618)

Question 847670: (I'm really confused on this question, can someone please help)
Given f(x)=5+6x-x^2 find and simplify.
I have to fill in a,b and c below. (Fill in the blanks)
A)f(t-2)=____?
B)f(z+h)-f(z)=____?
C)f(b)+3=_____?
Click here to see answer by Alan3354(69443)

Question 847931: Find the domain of each of the functions:-
f(x)=√(-x)
g(t)=√(2-cost)

Click here to see answer by Fombitz(32388)

Question 848031: Given the following function rules and domains, find the associated ranges. Show work (thanks)
a. f(x) = 5x+3, domain= { 0,1,2,3,4}
b. f(x) = x^2 -1, domain = {1,9,4}
Click here to see answer by Fombitz(32388)

Question 847710: Use the graphs of f(x)=-x^2+3x-2 and g(x)=-3 to find the roots of the equation
-x^2+3x+1=0
Click here to see answer by Fombitz(32388)

Question 848238: Hello! I am working on combining functions, and I have a problem. The problem is f(x)= 2/x and g(x)= 4/x+4 and i am to add them together. I know it is set up as 2/x +4/x+4 and when i work it out, I don't get the answer like it is in the book. The book says 6x+8/x2+4x and I have no idea to get that
Click here to see answer by josgarithmetic(39618)

Question 848315: find the domain of each:
f(t)=t/t(t+7)
/f(x)=√x-2
Click here to see answer by stanbon(75887)

Question 848323: Given:g(t)=3t-4,find g(t-3)-g(3)/t
Click here to see answer by swincher4391(1107)

Question 848348: G(x) - f(x) when f(x) = 3x+5 and g(x) = x^2n
Click here to see answer by josgarithmetic(39618)

Question 848462: y=3x-1/x+2
Does this equation define y as a function of x?

I see that there is one value for y and one for x. I would say that it is a function since y only has one value. If y had more than one value then it would not be a function of x. I was wondering if i was right or i think i might have it backwords. ANy help would be nice. Thank you all very much.
Click here to see answer by richwmiller(17219)

Question 848502: make a mapping diagram {(-1,4), (2,5),(3,5)}, then determine whether it is a function.
Click here to see answer by swincher4391(1107)

Question 848534: The function f is defined by f(x)=3x(squared)+4x
find f(-x)

Click here to see answer by ewatrrr(24785)

Question 848685: What are the solutions of f(x)=g(x) where g(x)=1?
Click here to see answer by jim_thompson5910(35256)

Question 848846: the function f graphed above is defined for −4≤x≤5. for which of the following values of x is f(x)=2(f(x))?
a.-5
b.-2
c.0
d.4
e.5
Click here to see answer by fcabanski(1391)

Question 849273: f(x)=2x^2-3x-4
g(x)=2x+3
find (f+g)(x)
Click here to see answer by josgarithmetic(39618)

Question 849536: Let g(x)=x^2+6x+1 , find and simplify g(-4)
Click here to see answer by Alan3354(69443)

Question 849865: Range of f(x)=x2+1
Click here to see answer by Fombitz(32388)

Question 849829: Find the domain of f(t)= t^(1\2) + t^(1\3)
Click here to see answer by Fombitz(32388)

Question 849882: Two functions are defined as: f(d) = 4d - 1 and h(d) = d^2 + 1

Click here to see answer by Fombitz(32388)

Question 849837: Evaluate the function at the indiacated values.
f(x)=4x-5 ; a.)f(2) b.)f(-2)

Click here to see answer by Fombitz(32388)

Question 849930: is the relation {(7,0),(9,3),(11,1),(13,0)}
a function?
Click here to see answer by Fombitz(32388)

Question 850030: what is the domain of
f(x)=x/6x^3+7
Click here to see answer by stanbon(75887)

Question 850111: what is the domain and range of the function f(x)= -25x+900? explain your answer
Click here to see answer by Fombitz(32388)

Question 850451: Its been a while since I have done functions, so I'm a little confused on this one.
if f(x)=4x/1-x and g(x)=2/x then f(g(x))=
the answer is supposed to be 8/x-2 but i got 8/1-x
I'm also a bit confused on this one as well
sqrt(a)/1+sqrt(a)=
the answer is supposed to be sqrt(a)-a/1-a but I just got 1
Click here to see answer by rothauserc(4718)

Question 850638: m=6 is the solution to which of the following equations
1. 4m-1=27
2. 2m-8=4
3. 5m+1=26
4. 3m+2=25

Click here to see answer by richwmiller(17219)

Question 850875: f(x) = x^2 + 6
g(x) = (x+8)/(x)
Find (g of f)(x).
Click here to see answer by Fombitz(32388)

Question 851023: simplify g(x)=2f(x+1) +3
Click here to see answer by josgarithmetic(39618)

Question 851049: Find the derivative of the function f(x)=x^4 -5x^2-7x+3.
Click here to see answer by Alan3354(69443)

Question 851111: let f(x)=3x^3 and g(x)=1/3x
then f(g(5x+9)) = ....
how do I solve this.
Click here to see answer by josgarithmetic(39618)

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