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

Tutors Answer Your Questions about Functions (FREE)

Question 359177: whats the value of algebra problem if g(x)=x2-2x g(1/5)
Click here to see answer by ewatrrr(24785)

Question 359358: Let f(x) = 2x - 1 and g(x) = (x + 5)/2. Find the function (f o g)(x). Simplify your answer.
Click here to see answer by stanbon(75887)

Question 359358: Let f(x) = 2x - 1 and g(x) = (x + 5)/2. Find the function (f o g)(x). Simplify your answer.
Click here to see answer by edjones(8007)

Question 359526: Is this a linear equation, and if so, how can it be written in standard form?
x + 1/y = 7
Click here to see answer by Fombitz(32388)

Question 359786: let h(x)=x^2-9. find two functions F and G such that f o g= h
Click here to see answer by stanbon(75887)

Question 359886: f(x) = (SQUARE ROOT OF...) 25-x^2, find the value of f(3)
Click here to see answer by robertb(5830)

Question 359945: Find f"circle"g and g"circle"f.
f(x)= -2x; g(x)= -2x^2 +3
Click here to see answer by stanbon(75887)

Question 359898: Determine the equation of the parabola with vertex,
a) (1,6) and passes through (0,-7)
b) (4,-5) and passes through (-1,-3)
thank you
Click here to see answer by Fombitz(32388)

Question 360095: Use the function given by (f(x)=x/8+1 & g(x)=x^3 to find the indicated value (f o g)-1(5)
Click here to see answer by ewatrrr(24785)

Question 360197: Solve the problem.
Express the gross salary G of a person who earns $40 per hour as a function of the number x of hours worked.
Click here to see answer by rfer(16322)

Question 360278: find an equation of the line containing the given pair of points. express your answer in the form x=a,y=b,or y=mx+b
(-2,-2) and (1,1)
What is an equation of the line?
y=
Click here to see answer by stanbon(75887)

Question 360282: write an equation of the line containing the given point and parallel to the given line. express your answer in the form y=mx+b
(7,9);x+9y=2
the equation of the line is y=
Click here to see answer by mananth(16946)

Question 360291: write an equation of the line containing the given point and perpendicular to the given line.
(9,-6); 7x+8y=9
the equation of the line is y=
Click here to see answer by Alan3354(69443)

Question 360287: write an equation of the line containing the given point and parallel to the given line express your answer in the form of y=mx+b
(-7,8),4x=9y+7
the equation of the line is y=
Click here to see answer by Alan3354(69443)

Question 360288: write an equation of the line containing the given point and perpendicular to the given line. express your answer in the form y=mx+b
(6,9);3x+y=2
the equation of the line is y=
Click here to see answer by Alan3354(69443)

Question 360275: find an equation of the line having the given slope and containing the given point.
m= 3/4, (6,-7)
The equation of the line is y=
type your answer in a slope intercept form
Click here to see answer by rfer(16322)

Question 360191: Need help with the following:
For the given functions f and g, find the requested function and state its domain.
f(x) = sqrt x + 11; g(x) = 3/x
Find f ∙ g.
Click here to see answer by Theo(13342)

Question 360194: Please help!!:
The cost C of double-dipped chocolate pretzels varies directly with the number of pounds of pretzels purchased, P. If the cost is $54.42 when 5.0 pounds are purchased, find a linear function that relates the cost C to the number of pounds of pretzels purchased P. Then find the cost C when 6.0 pounds are purchased.
Click here to see answer by Theo(13342)

Question 360280: find an equation of the line containing the given pair of points.
(1/4,-1/2) and (3/4, 3 )
what is the equation of the line
y=
Click here to see answer by nerdybill(7384)

Question 360500:
If , how many integers are in the domain of f ?
a none
b 3
c 4
d 7
e infinely many
Click here to see answer by Edwin McCravy(20056)

Question 360526: How many imaginary zeros does the function f(x) = 3x4 + 2x3 + 4x + 7 have?
Click here to see answer by Edwin McCravy(20056)

Question 360468: if the zeros of f(x) are 2 and 3, what are the zeros of f(x+1)?
Click here to see answer by edjones(8007)

Question 360467: if f(x) = 2x+1 and g(x) = x^2 -1 then (g.f)(x)=
. = o
Click here to see answer by edjones(8007)

Question 360747: p(x)=-4+24 where p(x) is selling price and x is # of cd's sold, what is the maximum revenue?
a)3000 b)20,000 c)24,000 d)36,000
thanks
Click here to see answer by jim_thompson5910(35256)

Question 360756: p(x)= -4+24 where p(x) is selling price and x is # of CDs sold, what is the maximum revenue?Revenue=(p(x))(x)
a)3000 b)20,000 c)24,000 d)36,000
thanks
(there is no typo i checked 10 times)
Click here to see answer by jim_thompson5910(35256)

Question 360833: Hi, I'm having some trouble with compositions of functions with fractions.
Here is the question:
f(x) = (x-1)/(x-3)
g(x) = (x-8)/(x-9)
Find f(g(x))
Find g(f(x))
Thank you SO much!
Click here to see answer by jim_thompson5910(35256)

Question 360825: I have been trying to help my 8th grade daughter with her Algebra 1 homework. We have spent countless hours trying to figure this one out at her grade level.
The teacher is asking for an equation or rule for the following:
x values: 1, 10, 19, 28
y values: 6, 2, -2, -6

(we know that the x values increase by 9)
(we know that the y values decrease by 4)
Please help us with this, trying to figure out every combination of -4/9 ??? or something. We need a rule or equation. THANK YOU SO MUCH
Click here to see answer by ewatrrr(24785)

Question 361181: Please help!
Find the domain of the function.
g(x) = x/x^2-64
Click here to see answer by edjones(8007)

Question 361326: Given the function g(x)=x2+12x find the indicted values if g(3) and g(-5)
Click here to see answer by edjones(8007)

Question 361778: For this function, find three ordered pairs that lie on the graph of the function for: y = |x| + 6
Click here to see answer by Fombitz(32388)

Question 361806: Find the slope of the line that is (a) parallel and (b) perpendicular to the line through the pair of points.
(-7,-2) and (1,7)
The answer(s) has to be as an integer or simplified fraction
Click here to see answer by mananth(16946)

Question 361814: Find an equation of the line described below. Write the equation in slope-intercept form (solved for y), when possible.
Through (13,9) and (9,13)
What is the equation of the line?
(simplify your answer.)
Click here to see answer by mananth(16946)

Question 361918: n[m(t)] if n(x) = 3^x and m(t) = SQRT(t) + 1
I really need some help I'm not understanding this problem at all!!
Click here to see answer by Fombitz(32388)

Question 361916: can you please explain the steps
state the domain of f(x)=9-18x
thank you
Click here to see answer by Theo(13342)

Question 362088: f(x)=2x+1
x=3, x=0 x=-2

function notation.
Click here to see answer by ewatrrr(24785)

Question 362242: what is the range of the function f(x)=2x+7

Click here to see answer by nyc_function(2741)

Question 362302: form a polynomial whose real zeros and degree are given. zeros:-1,1,3; degree 3
Click here to see answer by robertb(5830)

Question 362319: Find an equation of a rational function f that satisfies the conditions:

vertical asymptote: x = - 3, x = 0
horizontal asymptote: y = 0
x-intercept: 1; f (2) = 1

Click here to see answer by stanbon(75887)

Question 362439: How do I answer this?
Solve the inequality.
x^4 - 32x^2 - 144 > 0
Click here to see answer by Fombitz(32388)

Question 362445: Please help.
pH=log[10][H^+] Find the pH if the [H^+] = 9.6 x 10^-6.
Click here to see answer by Fombitz(32388)

Question 362399: how to write the slope-intercept form of the equation of each line
Click here to see answer by Fombitz(32388)

Question 362453: The function D(h)=5e^-0.4h can be used to determine the milligrams D of a certain drug in a patient's bloodstream h hours after the drug has been given. How many milligrams (to two decimals) will be present after 10 hours?
Click here to see answer by Fombitz(32388)

Question 362446: If 7^-x= 1/4, what does 49x equal?
Click here to see answer by HasanSahin(52)

Question 362493: I need help with the following problem:
Evaluate the function for the given value of x
f(x)=2
x=8 I don't understand how to evaluate this problem.
Thanks

Click here to see answer by Fombitz(32388)

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