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

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Question 568572: 23>-x/2-5
Click here to see answer by lwsshak3(11628)

Question 568654: What is the domain of SQRT((x+5)/(x^2-25))
Click here to see answer by stanbon(75887)

Question 568736: what's the domain of the function:
x^2-4/x-2
Click here to see answer by jim_thompson5910(35256)

Question 569216: Find �(�5) for each function.
�(x) = 5x + 35
�(x) = 5x + 35
Click here to see answer by Alan3354(69443)

Question 569622: how do i graph constant function of f(x)=2 and use the graph to identify domain and range of f

Click here to see answer by JBarnum(2146)

Question 569874: What is the value of B in the equation A = (h/2)(B+b)
Click here to see answer by nerdybill(7384)

Question 569869: Can this be solved... 21 square root of 35 over 7 square root of 5?
Thank you. How did you do it?
Thanks again.
Click here to see answer by stanbon(75887)

Question 570062: Find (g of f)(x) and domain of (g of f)
f(x)=4x+5
g(x)= 2/x
(g of f)(x)= Simplified answer...
Domain of (g of f)...
Click here to see answer by stanbon(75887)

Question 570165: what is the slope of a binomial (-2,4) (-4-4)

Click here to see answer by Alan3354(69443)

Question 570371: Determine whether the function has an inverse function, and if so, find the inverse: QUOTE
The number N of bacteria in a refrigerated food is given by
where T is the temperature of the food (in degrees Celsius). When the food is removed from refrigeration, the temperature of the food is given by: QUOTE

where t is the time (in hours).
Find the composition N(T(t)) and interpret its meaning in context.
Find the number of bacteria in the food when t = 2 hours.
Find the time when the bacteria count reaches 2000.
Click here to see answer by stanbon(75887)

Question 570532: Rosa works due north of home. Her husband Ray works due east. They leave for work at the same time. By the time Rosa is 5 miles from home the distance between them is one mile more than Ray's distance from home. How far from home is Ray?
Click here to see answer by Earlsdon(6294)

Question 570711: Can you solve this by graphing?
y=-3x+3
6x+y=6
The solution set is what? Type an ordered pair ( )

Thank you!
Click here to see answer by mananth(16946)

Question 570769: find the domain of function :
f(x)= √(15-3x )
what is the domain of f?
Click here to see answer by KMST(5328)

Question 570877: Please help me solve this equation
Click here to see answer by Alan3354(69443)

Question 571039: If f(x)= x^2 + 3, g(x)=4x, the value of g(f(6)) is ?
Click here to see answer by nyc_function(2741)

Question 571039: If f(x)= x^2 + 3, g(x)=4x, the value of g(f(6)) is ?
Click here to see answer by richard1234(7193)

Question 571130: Sorry I forgot to write out the pair of lines
3x+8=y
2y=6x-3
are these lines parallel?
Click here to see answer by mananth(16946)

Question 571130: Sorry I forgot to write out the pair of lines
3x+8=y
2y=6x-3
are these lines parallel?
Click here to see answer by Maths68(1474)

Question 571128: I have to determine whether the graphs of each pair of lines are parallel...Please help.
Click here to see answer by KMST(5328)

Question 571210: The point (6,-3) is on the graph of y=f(x). Find the corresponding point on the graph of g(x)=f(3x)
Big troubles on this one for some reason...any help is greatly appreciated.
Click here to see answer by richard1234(7193)

Question 571211: A little help and understanding with this one is greatly appreciated...
Find f(x) and g(x) such that h(x) = (f o g)(x).
h(x) = |6x + 9|

Click here to see answer by richard1234(7193)

Question 571300: What is the domain of y=x^3-4
Click here to see answer by lwsshak3(11628)

Question 571611: Can someone please help with this?
f(x) = 3x^2 -2x
f(0)=
f(-1)=
f(2)=
Click here to see answer by Maths68(1474)

Question 571611: Can someone please help with this?
f(x) = 3x^2 -2x
f(0)=
f(-1)=
f(2)=
Click here to see answer by josmiceli(19441)

Question 571715: what is the solution of g(-3)? explained

Click here to see answer by Alan3354(69443)

Question 571728: which relation is also a function {(2,0),(3,2),(2,3)} {(0,0),(3,0),(5,0)} {(3,1),(3,2),(3,3)} {(5,2),(5,4),(2,6)}
Click here to see answer by solver91311(24713)

Question 572132: Let f(x) = 6x − 8 and g(x) = 3x + 9.Write a formula for the following function.
g − f
I tried 3x+9-6x-8 and it was wrong, I also tried the simplified version, -3x+1 and it was wrong as well.
Click here to see answer by scott8148(6628)

Question 572274: 1. (4a^3+2b)(5a-3b^2)=
2. (16x^2+50x-21)/(2x+7)=
3. 9(x+4)=2(5x-3) What does x=?
4. 5&1/3x-15=7x+15 What does x=?
Thank you for any help.
Click here to see answer by Tatiana_Stebko(1539)

Question 572760: What is the domain and range of the function g(x)= x^4-3x^3+2x^2+x-1
I had gotten a domain of all real numbers, and I had estimated the range to include all numbers from [-1, infinity), but I was told the range is incorrect.
Click here to see answer by KMST(5328)

Question 572914: Given function f(x) and that is has zeros at every k, where k is an integer. What are all the zeros of the function 3f(2x)?
Click here to see answer by richard1234(7193)

Question 573133: how to find the domain and range of (e^-x) +2
Click here to see answer by solver91311(24713)

Question 573176: What would be the domain of (2x-5)/4
Click here to see answer by oscargut(2103)

Question 573197: Writing functions from roots:
Degree of 4 and roots are 2i, 3, and 6
and
Degree of 5 and roots are 0, 1, 2, plus or minus √31

Thanks in advance I really appreciate it ;)
Click here to see answer by scott8148(6628)

Question 574388: 10x+4
Click here to see answer by Alan3354(69443)

Question 574612: Please help!
If (x) = 2x -4 and g(x) = x^2 -4x, find each value
1. f(3) -1
***** I got 2 for an answer
f(3)-1
f(3)-1=2(3)-4
6-4=2
answer =2
but... what's the -1 for then? do i do anything with it?
Click here to see answer by KMST(5328)

Question 574700: I need to find the domain of g(x)=(2)/(x^2+x-12)
Click here to see answer by reviewermath(1029)

Question 574700: I need to find the domain of g(x)=(2)/(x^2+x-12)
Click here to see answer by solver91311(24713)

Question 575098: If the points (2,3), (3,5), (4,6), and (6,3) are on a graph, what does h(2) equal; h(4) equal; and h(5) equal?
Click here to see answer by richard1234(7193)

Question 576008: state the domain of the composite function.
f(x)=x^2+1; g(x)=2x^2+3
Click here to see answer by stanbon(75887)

Question 576036: what is the domain of 3x^3+9x^2
Click here to see answer by jim_thompson5910(35256)

Question 576010: show that (fog)(x)=(gof)(x)=x
f(x)=4x; g(x)=1/4 x
Click here to see answer by jim_thompson5910(35256)

Question 576134: if f(x)=2x^2+5sqr(x-2) then what is the domain?
Click here to see answer by lwsshak3(11628)

Question 576349: I need help understanding how is equal to
I've tried to figure out how that is the answer but the factor with the multipilicty of 3 throws me off. Please help me, thank you!
Click here to see answer by solver91311(24713)

Question 576730: f(x)=1/2x+8
Click here to see answer by Alan3354(69443)

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