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

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Question 601400: f(x)=-5x
A)-5/x-1
B)-6
C)-5
D)0
Click here to see answer by flame8855(424)

Question 601469: If f(x)= -4x^2+12x-9 and g(x)= -9-3x+x^2,find 6f(1/2)-2g(2). Please show me step by step.
Click here to see answer by jim_thompson5910(35256)

Question 601398: For the function, find the average rate of change of f from 1 to x:
f(x)-f(1)/x-1, x=1

Click here to see answer by Alan3354(69443)

Question 601525: what is the range of the function when the domain is less or equal to 2
Click here to see answer by richard1234(7193)

Question 602220: i have tried a lot of ways to solve this equation and i just cant understand it...
showing all work or step by step either using the quadratic formula or completeing the square... can u help me solve
2(3x+4)-4x(3x+4)=0 i think i have correctly simplified it into -12x^2-10x+8=0 is this correct and what do i do from here if it is..? thankyou for your help...
brandon email is- stonewoodfarms87@aol.com
Click here to see answer by mananth(16946)

Question 601913: Explain why f(f�1(x)) is x.

Click here to see answer by richard1234(7193)

Question 594700: For the position function s(t)=-16^2+106t, complete the following table with appropriate average velocity. Then make a conjecture about the value of the instantaneous velocity at t=1
Time interval: [1,2], [1,1.5],[1,1.1],[1,1.01],[1,1.001]
Average Velocity:______,_________,______,_________,_______
Click here to see answer by dhartman0220(8)

Question 600036: Find the Domain of the following:
a) g(x) = 5^x
b) g(x) = In(x-4)
c) g(t) = log(t-2)
d) f(t) = 5.5e^t
Click here to see answer by dhartman0220(8)

Question 602842: Given below is the even-number function. Which of the following are equal to E(26)? Check all that apply.
E(n) = 2n
A. 26
B. 676
C. The twenty-sixth even number
D. 52
Click here to see answer by flame8855(424)

Question 602876: Given that f(x) = 5 � x^2, evaluate f(�3)
step by step please
many thanks for your time!
Click here to see answer by flame8855(424)

Question 603054: what is the answer to
g(k(j(0))) using these four functions
g(t)=10+4t , h(t)=t^2-4 , j(t)=5(t+5) , k(t)=5t-4

Click here to see answer by stanbon(75887)

Question 603573: Evaluate 5x+6 given x=7?
Click here to see answer by jim_thompson5910(35256)

Question 603749: Find the domain
f(x)= 5/x-4
Click here to see answer by lwsshak3(11628)

Question 603749: Find the domain
f(x)= 5/x-4
Click here to see answer by emma20(1)

Question 604282: im trying to find the given functions f(X=12x+18 and g(X)=4x+6, find (f/g)(x)
Click here to see answer by flame8855(424)

Question 604363: What is the domain of f(x)=x^2-3x+12
Click here to see answer by flame8855(424)

Question 604363: What is the domain of f(x)=x^2-3x+12
Click here to see answer by jim_thompson5910(35256)

Question 604438: given the function f(x)=2x-5. what is the value of f(x) when x=-5

Click here to see answer by jim_thompson5910(35256)

Question 604574: For the function find the maximum number of real zeros that the function can have, the maximum number of x-intercepts that the function can have, and the maximum number of turning points that the graph of the function can have.
f(x)=5x^3+8x^2-2x+9
Click here to see answer by nerdybill(7384)

Question 604578: State the domain of the rational function.
g(x)= x-8/x+3
Click here to see answer by nerdybill(7384)

Question 604576: Find the vertical asymptote(s) of the graph of the given function.
F(x)= x-4/x^2+6
Click here to see answer by Alan3354(69443)

Question 604981: Let f(x) = 2x2 and g(x) = 1 - x3.
Find g(f(-1)).
Click here to see answer by lynnlo(4176)

Question 605177: Hi, I have a question.
If f(x)=2x+3, g(x)=1-2x, and 3f(a)=g(3a), then a=
I know it is -2/3 but I don't understand how?
Thanks!
Click here to see answer by Alan3354(69443)

Question 605317: What is the slope of the line passing through (-3, 5) and (5, -3)?
Click here to see answer by solver91311(24713)

Question 605695: If m and n are positive numbers, what percent of (n+3) is 2m
Click here to see answer by vleith(2983)

Question 605718: What is the value of f(2) for the function f(x) = 5x + 3?
Click here to see answer by nerdybill(7384)

Question 606002: Find the standard equation of a parabola that has a vertical axis and satisfies the given conditions.
vertex (0, −5), passing through (4, 27)

Click here to see answer by lwsshak3(11628)

Question 606204: If f(x)=2x^2 +5 and g(x)=sqrt(x-5)
then find the domain and range of (fog)x?
Click here to see answer by stanbon(75887)

Question 606209: If f(x) = 4x � 1 and g(x) = x2 + 2x + 2, what is f(g(x)) ?

Click here to see answer by stanbon(75887)

Question 606275: Find the inverse of f(x)=x^3-12. How do you find the inverse? I am having trouble with this particular problem.
Click here to see answer by solver91311(24713)

Question 606718: how to show X^2+4x+5 is not one -one?
Click here to see answer by richard1234(7193)

Question 607189: Define g: R---> Z by the rule
g(x)=9x+5, Vx E R

Is g(x) bijective function? Prove or disprove.

Click here to see answer by jim_thompson5910(35256)

Question 607435: PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
each of the following functions is invertible. Find the inverse function of f^-1(x). Give the domain of the inverse function.
a) f(X)=3x+4 b)f(x)=square root of x-4 c) f(x)=1/x-2, x>2
im not sure if i did it right!!!
I got for a) x-4/3 and domain (-infinite, infinite)
b) x^2+4 and domain (-infinite, infinite)
c) i do not know
Click here to see answer by stanbon(75887)

Question 607441: f(x)=2+e^x
a)find the inverse function f^-1(x)
b)fine the domain and range of f^-1(x)
Click here to see answer by stanbon(75887)

Question 607440: f(x)-2+e^x
a)find the inverse function f^-1(x)
b)fine the domain and range of f^-1(x)
Click here to see answer by stanbon(75887)

Question 607613: how do i solve 5r-s=5 and -4r+5s=17 get back to me asap plz

Click here to see answer by scott8148(6628)

Question 607665: what is the domain of the function g(x)=6/5-9x
Click here to see answer by jim_thompson5910(35256)

Question 607842: A rock falls from a tower that is 480 feet high. As it is falling, its height is given by the formula h(t)=480-16t^2. How many seconds will it take for the rock to hit the ground (h=0)? Round to the nearest tenth.
Click here to see answer by ewatrrr(24785)

Question 607834: Find and simplify the difference quotient of f, f(x+h)-f(x)/h, h not= 0, for the function.
Click here to see answer by lynnlo(4176)

Question 607831: Find the inverse function of f. State the domain and range of f.
f(x)=3x-2/xt5
Click here to see answer by lynnlo(4176)

Question 607990: if f(x) = 3x-4 and g(x)= square root of x^2 - 9. Find fog(5). ??

Click here to see answer by ewatrrr(24785)

Question 608154: Given the function f(x) = 9x - 9
a. Find the rate of change between the two stated values for x: 8 to 9.
b. Find the equation of a secant line containing the given points: (8,f(8)) and (9,f(9)) I could use the answer as soon as you can.
Click here to see answer by richard1234(7193)

Question 608425: The question says: Let f(x)=x^(2)+5 and g(x)=x-7 . Perform these function operations: f(x)=g(x), f(x)multiplied by g(x), f (g(2) ), and g( f(x)). I would appreciate much help on these several problems.
Click here to see answer by nerdybill(7384)

Question 608589: 21. Without graphing, tell whether the line containing (�7, 5) and (�7, �9) is horizontal, vertical, or neither.
Click here to see answer by rfer(16322)

Question 608986: Find domain of f (x) = 2x-7, my question is how do you know the answer is all real #s?
Click here to see answer by flame8855(424)

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