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

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Question 751340: what are the zeros of the function: y=3x^2+36x-39
Click here to see answer by reviewermath(1029)

Question 751401: Evaluate [f(x+h)-f(x)]/h and simplify if f(x)=x^2-x
Click here to see answer by jim_thompson5910(35256)

Question 751535:
Click here to see answer by josgarithmetic(39618)

Question 751794: 4+5(s-4t)=
Click here to see answer by lenny460(1073)

Question 752095: having problem with square root problem. the square root of 16 plus square root of 8 to the power of 3. Is this how you would type this on a computer? ^16+3^8
Click here to see answer by ankor@dixie-net.com(22740)

Question 752214: >1. Find the average rate of change of f(x)=x^3-9x+9:
a) from -8 to -2
b) from -1 to 1
c) from 1 to 4
a) what is averge rate of change of f (x) =x^3-9x+9 from -8 to -2?

Click here to see answer by stanbon(75887)

Question 752215: 3. write the function whose graph is the graph of y=sqrt of x, but is shifted to the left 3 units y=____
4. write the function whose graph is the graph of y=|x|, but is shifted down 8 units y=___

Click here to see answer by stanbon(75887)

Question 752213: write the function whose graph is the graph of y=x^2 but horizontally strectched by a factor of 8. y=____
Click here to see answer by stanbon(75887)

Question 752514: Find the domain of the function
f(x)= sqrt25-x
Write the function whose graph is the graph of y=(x+2)^2 but is reflected the x-axis
y=____
Click here to see answer by stanbon(75887)

Question 752512: write the function whose graph is the graph of y=(x+4)^2 but is reflected about the y-axis
y=____
Click here to see answer by stanbon(75887)

Question 752409: Find the function that is finally graphed the following transformations are applied to the graph of y=sqrt of x in the order listed
1. shift up 9 units
2. Reflect about the x-axis
3. Reflect y-axis
y=

Click here to see answer by Theo(13342)

Question 752585: Explain when to use a solid line as a boundary when graphing a linear inquality
Click here to see answer by tommyt3rd(5050)

Question 752638: If f(x)+{(x^3)-(3x^2)+ax-15} is divided by (x-3) and remainder is (-9), find 'a'.
Click here to see answer by stanbon(75887)

Question 752650: Determine algebraically whether the given function is even,odd, or neither.
f(x)=-2x^2 |-6x|

Click here to see answer by tommyt3rd(5050)

Question 752654: For the function f defined by f (x)=6x/x^2+1, find the following vales
(simplfiy each answer)
a) f(-2)=
b) f(x)=
c) -f(x)=
d) f(x+h)=
Click here to see answer by dkppathak(439)

Question 752653: Write the function whose graph is the graph of y=(x+2)^2 but is reflected the x-axis
y=____
Click here to see answer by josmiceli(19441)

Question 752653: Write the function whose graph is the graph of y=(x+2)^2 but is reflected the x-axis
y=____
Click here to see answer by Earlsdon(6294)

Question 752641: If one of the factor of {(x^2)+x-20} is (x+5), find the other factors.
Click here to see answer by Earlsdon(6294)

Question 752691: How to find the domain of f o g and g o f if f(x)=(3x+2)^1/2 and g(x)=x^2+3
Click here to see answer by josgarithmetic(39618)

Question 752728: y=3x^2+18x-1
Determine the zeros of your function. Give an algebraic reason for the
existence or nonexistence of real-valued zeros of your quadratic function.

Click here to see answer by josgarithmetic(39618)

Question 752710: Find the function that is finally graphed after the following transformations are applied to the graph of y= sqrtx in order listed
1) Reflect about the x-axis
2) Shift down 7 units
3) Shift left 8 units
Click here to see answer by josgarithmetic(39618)

Question 752830: Se (f-1og)(x) = 2x2 + x - 6 e f(x) = x/2 + 3, ent�o g(x) � dada por:
Click here to see answer by KMST(5328)

Question 752927: Graph function using the techinique of shifting, compressing, strecthing and /or reflecting
f(x)=5(x+4)^2+1
Click here to see answer by Edwin McCravy(20056)

Question 752930: For f(x)=x^2-3x-4, and g(x)=x-4...
Evaluate and simplify the following:
a) for what x, is f(x)=g(x)?
b) (f-g)(x)
c) (f/g)(x)

Thank you for your time!
Click here to see answer by MathLover1(20850)

Question 752971: f(x) = 5x and g(x) = x-4
Find: f[g(2)]
Click here to see answer by stanbon(75887)

Question 752971: f(x) = 5x and g(x) = x-4
Find: f[g(2)]
Click here to see answer by jim_thompson5910(35256)

Question 753225: Graph the following function using the technique of shifting, compressing, strecthing and/or reflecting
Find domain and range of the function
g(x)=2 √x-3 +7
domain=___ (interval notation)
range=_____ (interval notation)

Click here to see answer by Edwin McCravy(20056)

Question 753362: Solve by factoring
7x^2 = 19x
Click here to see answer by stanbon(75887)

Question 753393: use the definition of the derivative to find f'(x) if f(x)=5x-7
Click here to see answer by solver91311(24713)

Question 753459: Could you please help me to solve this:
Using the quadratic formula solve: 2x^2 + 4x - 7 = 0
Thanks a lot

Click here to see answer by josmiceli(19441)

Question 618024: Find the given function if f(x)=4x-3 and g(x)=x^2-2x. (F-g)(x)?
Click here to see answer by tommyt3rd(5050)

Question 753657: Which statement about the function �(x) = 1/2x is always true?
A. The value of y is always less than the value of x
B. When the value of x is positive, the value of y is negative.
C. As the value of x increases, the value of y increases.
D. The value of y is always different from t he value of x.
Click here to see answer by MathLover1(20850)

Question 753763: How do you find inverse of this function:
y = x^5 + 5x^3
I know I have to swap x for y.
x = y^5 +5y^3 then solve for y but I forgot the next steps.
x = y^3(y^2 +5) factor but I still dont remember how to get to the point where I can isolate y.
thanks!

Click here to see answer by Edwin McCravy(20056)

Question 750585: p(x)=2x-2 find the domain

Click here to see answer by tommyt3rd(5050)

Question 750660: find the domain for each function
f(x)=-5x+4
Click here to see answer by tommyt3rd(5050)

Question 749909: f(x)=2x-1 and g(x)=3x
Click here to see answer by tommyt3rd(5050)

Question 753814: Please help me solve the question f(x)=(x^2-x-6)/(x-1). A) x=-1 & x=3 B) x=-1. C) x=2 & x=-3.
D) x=3 &x=-2
Click here to see answer by rothauserc(4718)

Question 754076: If f is a function defined by the equation f(x) = x^2 + 3x + 4
a) find f(a+h) - f(a) / h when a and h are real numbers and h is not equal to 0
Can you please help me out? Thanks so much in advance:)
Can you also please show me the steps it would help me understand better:)
Click here to see answer by stanbon(75887)

Question 754243: I'm having some trouble with this question:
-
f(x) = -13x2 - 7x4 - 11x
- find f(5)
-
A) 538
B) -6288203
C) 639
D) -4595
E) -4,755
F) -3456
-
Any help would be hugely appreciated.
Click here to see answer by rothauserc(4718)

Question 754306: Collin noticed that various combinations of nickels and dimes could add up to $0.65
-Let x equal the number of nickels
-let y equal the number of dimes
What is the domain where y is a function of x and the total value is 0.65?

Click here to see answer by josgarithmetic(39618)

Question 754405: State the domain of the function
f(x)= x^2+1/x^2-3x
Thank you for your help.
Click here to see answer by josgarithmetic(39618)

Question 754428: If the point (a, 3) is at a distance of √5 unit from (2, a), find a?
Click here to see answer by tommyt3rd(5050)

Question 754508: Find the domain of each of the rational expressions. (Identify which values of x will make the denominator zero and thus are not allowed in the domain.)
7-3b/b^2-12+20 and 3b-7/b^2-20+100
Divide your first rational expression by the second one. Write the answer in lowest terms.
Find and state the common denominator between the two expressions. Build up each expression so that it has the common denominator. (Remember not to do any canceling at this point since you need those extra factors for the common denominator.)
Add the two rational expressions together. Factor again if possible, and present the answer in lowest terms.
Please Help! I have tried to figure this out and it is driving me crazy. I'm so confused. If you could please explain what it is you are doing to get your answers so that way I could better understand the process. Thanks!!
Click here to see answer by MathTherapy(10552)

Question 754689: Are f and g inverses of each other? f(x)=-23 +16; g(x)= (x-16)/-23 ????? please and thank you!!!
Click here to see answer by MathLover1(20850)

Question 754778:
The one-to-one functions and are defined as follows
g={(0,-3),(3,6),(5,-5),(6,-1)}
h(x)=2x+9
Find the following
g^-1(6)=
h^-1(x)=
(h^-1*h)(-7)=

Click here to see answer by stanbon(75887)

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