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

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Question 624715: f(x) = x + 2 and asked to evaluate for f(-2) and f(0)
Click here to see answer by jim_thompson5910(35256)

Question 624918: suppose that the revenue R, in dollars, from selling x clocks is R(x)=30x. The cost C, in dollars, of selling x clocks is C(x)=0.1x^2+7x+400. Find the profit function.
Click here to see answer by prateekagrawal(56)

Question 624931: f(x)=x+2/x-6 i
is the point on (3,14)on the graph of f
Click here to see answer by jim_thompson5910(35256)

Question 624932: Hello. I have to find the f[g(x)] for the functions f(x)=4x+9;g(x)=-5x+7. could you please send me the step by step solution so I can learn it the right way. thank you and have a good day
Click here to see answer by jsmallt9(3758)

Question 624997: Find functions f and g so that h(x)=f(g(x)). The function g must be a polynomial or rational function.
h(x)= 3√x^2-3
(The three is on top of the √).
Thanks guys :D.
Click here to see answer by richard1234(7193)

Question 624993: Find functions f and g so that h(x)=f(g(x)). The function g must be a polynomial or rational function.
h(x)= ln(2x+5)
Thanks in advance to anyone who helps, I really appreciate it!
Click here to see answer by jsmallt9(3758)

Question 625106: Let f(x) = x2 + 3x � 4 and g(x) = x + 5. Find f(x) � g(x).
Click here to see answer by oscargut(2103)

Question 625141: One zero of the function is -4, find the others.
f(x)=x^3-2x^2-11x+52
Click here to see answer by oscargut(2103)

Question 625305: find the inverse and check.
h(x)= 1/3 x + 1
h(x)= 7/8x-2
d(x)= 5x+7/2x+4
Click here to see answer by jankiz(13)

Question 625379: what is the approximate area of an ellipse that is 150 feet long and 25 feet wide, Use the formula A=nab.
Click here to see answer by Alan3354(69443)

Question 625376: what is the domain of x^2+y^2=64
Click here to see answer by reynard2007(52)

Question 625151: One zero of the function is i. Find the others.
f(x)=x^4-4x^3+2x^2-4x+1
Click here to see answer by jsmallt9(3758)

Question 625434: how do i form a polynomial whose zeros are -4,4,1 and degree is 3?
Click here to see answer by Alan3354(69443)

Question 625473: Please help me find the Domain and Range of the function: y=x^2-9
Thank you
Click here to see answer by oscargut(2103)

Question 625577: If h(x)= x^2-4xy+y^2/(x+2)(y-3), find f(-1,2)
Click here to see answer by oscargut(2103)

Question 625878: what is the answer to 3/5 - 7/2
Click here to see answer by Maths68(1474)

Question 625878: what is the answer to 3/5 - 7/2
Click here to see answer by lenny460(1073)

Question 626193: (2,1)(22,-5),(37,1),(2,7),(56,7) what is the domain
Click here to see answer by jim_thompson5910(35256)

Question 626326: Let f(x)=ax+b, where a and b are positive numbers, and assume that the following equation holds for all values of x: f(f(x))=bx+a. Find a+b.
Click here to see answer by Edwin McCravy(20054)

Question 626402: what is the y intercept of x-2y=0
Click here to see answer by jeanevyazuelo(1)

Question 626402: what is the y intercept of x-2y=0
Click here to see answer by solver91311(24713)

Question 626402: what is the y intercept of x-2y=0
Click here to see answer by lenny460(1073)

Question 626519: what is the functional value requested in the problem:

F(x)=x^2-t^2

a.) F(t)=
b.) F(5t)=
Click here to see answer by jim_thompson5910(35256)

Question 626692: in how many ways can 10 runners finish first, second, or third ?
Click here to see answer by jim_thompson5910(35256)

Question 626695: What is the probability of drawing all red cards from a standard deck of 52 cards if you draw 5 cards from the deck? (Think combinations.)
A) .0253
B) .253
C) .50
D) .523
E) .875
Click here to see answer by stanbon(75887)

Question 626830: Evaluate the function, f(x)=5x+2. Find f(-1/2)
Click here to see answer by jim_thompson5910(35256)

Question 627000: find the domain of f(x)= (log(x-1))/ (sqrt(6-3x))
Click here to see answer by solver91311(24713)

Question 627199: I can't tell if this question is trying to try me or what.

True/False the table below does not define a function
______________
Domain Range
____________
1 -1
2 1
3 1
4 0

Click here to see answer by jim_thompson5910(35256)

Question 627224: what does the function exists and doesnot exist mean
Click here to see answer by solver91311(24713)

Question 627313: for the piecewise function find the values g(0),g(2), and g(7)
link to question image:http://oi48.tinypic.com/6jf5sm.jpg
i really need help on this i have no idea how to do this and i dont have access to a calculator yet with graphing just hoping im allowed to ask more then 5 questions when i start my test this is HW online so its unlimited i need help on
Click here to see answer by jim_thompson5910(35256)

Question 627404: if f(x) = 3x + 7 find f(3b) + 7 and simplify
Click here to see answer by jim_thompson5910(35256)

Question 627497: Let and G(x)=8-x
Find (F/G)(-1)= ?

Click here to see answer by reviewermath(1029)

Question 627493: Can you help jog my memory by showing steps to solving the following functions?:
Given f(x) = {(2,3),(3,7),(-1,5),(0,-1)
State the domain of f(x)
State the range of f(x)
Find f(3)+f(-1)
Click here to see answer by ewatrrr(24785)

Question 627725: if the domain of "f" is all real numbers in the interval [0,8] and the domain of "g" is all real numbers in the interval [-3,4], the doman of "f+g" is all real numbers in the interval_____?
Click here to see answer by reviewermath(1029)

Question 627113: Let f(x)= ax+b, where a and b are positive numbers, and assume that the following equation holds for all values of x: f(f(x))= bx+a. Find a+b.
Click here to see answer by richard1234(7193)

Question 627990: is the general form of the constant function f(x)=a(x^0),where a is constant?
Click here to see answer by jim_thompson5910(35256)

Question 628024: I can not seem to grasp how to find the answers for problems like this:
Multiply and simplify by factoring. I think what I am having the problem understanding is the "perfect square" factors.
√12* √150
Thanks for all your help.
Click here to see answer by jim_thompson5910(35256)

Question 628028: If 10 is in the domain of f−1, find f [f−1(10)].
f[f−1(10)] =
Click here to see answer by solver91311(24713)

Question 628027: Assume that the given function has an inverse.
Given
f(3) = 2, find f^−1(2).
f^1(2) = ?
Click here to see answer by stanbon(75887)

Question 628172: How can I find the range of x/(x+2)?
Click here to see answer by solver91311(24713)

Question 628285: can you help me evaluate the following problem
f(x)=2x-5 and g(x)= x^2+3x+4
f(2) - g(3)
Click here to see answer by reviewermath(1029)

Question 628284: can you help me evaluate the following problem
g(X)= x^2 + 3x + 4
g(-1)
Click here to see answer by reviewermath(1029)

Question 628300: can you help me evaulate this function
for the function f(x)= -1/2x + 6,find the value of x for which f(x)=x
Click here to see answer by reviewermath(1029)

Question 628428: If and then =
Click here to see answer by Tatiana_Stebko(1539)

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