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

Tutors Answer Your Questions about Functions (FREE)

Question 1015492: F (x)=x-5
G (x)=x 3
Find f (g (-8))
Click here to see answer by algebra hello(55)

Question 1015659: please help me with this problem I am not sure how you make that sympol for the higher powers so if you could explain that also.
f(x)= 5x+4; g(x)=7x-1
a. (f+g)(x)
Thank you
Click here to see answer by Alan3354(69443)

Question 1015661: Please help me with this problem
f(-x); f(x)= 3x squared+3x-3
I am very confused with these kind of problems and been struggling; this is an online math class for me so no real tutors around that can help.
Click here to see answer by Alan3354(69443)

Question 1015657: please help me with this problem
f(x) 4x+7 over 7x-4; g(x) x over 7x-4 and find this answer (f-g)(x)=
Click here to see answer by Alan3354(69443)

Question 1015660: please help me with this problem
f(-x) = x over x squared +1
Click here to see answer by Alan3354(69443)

Question 1015694: -f(x)
f(x)=3x^2 +3x-3
I'm confused on where I would place the negative to solve for f(x)
Click here to see answer by ikleyn(52752)

Question 1015698: 8. f(x)=5x+4 and g(x)=7x-1
so I need to solve for this. (f+g)(x)
Click here to see answer by ikleyn(52752)

Question 1015698: 8. f(x)=5x+4 and g(x)=7x-1
so I need to solve for this. (f+g)(x)
Click here to see answer by fractalier(6550)

Question 1015675: Please show all work.
Given the following functions
f(x)=x+3
g(x)=√(x-1)
Find
A. (f+g)(1) and (f-g)(1)

B. Domain of f(x) and g(x)

C. (f+g(1))(x)

Click here to see answer by rothauserc(4718)

Question 1015707: f(x)=9x+7 and g(x)=5x composite function and state domain. That is what the question says nothing else is given but this .
a. (f o g)(x)
Thank you
Click here to see answer by Fombitz(32388)

Question 1015705: Hi,
I've tried this a few times but I just can't get the right equation.
The question is: "Given h(x)=4x+8, find 4[h(-3/4)]". This problem is really confusing me, could you help?
Thank you!
Click here to see answer by Fombitz(32388)

Question 1015710: If f(x)=3x^2+3x-3 and I need to solve for f(x+3) how would I do this step.
Click here to see answer by fractalier(6550)

Question 1015723: 3x^2+3x-3 and need to plug in f(3x)
Click here to see answer by Boreal(15235)

Question 1015723: 3x^2+3x-3 and need to plug in f(3x)
Click here to see answer by fractalier(6550)

Question 1015706: 3√x g(x) find expressions
a. ( f o g)(4)
b. (g o f)(2)
c. (f o f)(1)
d. (g o g) (0)
Thank you for any help I can get with solving this problem.
Click here to see answer by fractalier(6550)

Question 1015736: I am not understanding the (f o f) problems this one for sure
f(x)=3x and g(x)=9x^2+1
with (f o f)(1)
Thank you
Click here to see answer by fractalier(6550)

Question 1015736: I am not understanding the (f o f) problems this one for sure
f(x)=3x and g(x)=9x^2+1
with (f o f)(1)
Thank you
Click here to see answer by ikleyn(52752)

Question 1015832: Given (x) = x / 1-x, show that 1/2 [j(x) + j(-x)] = J(x^2)
Click here to see answer by ikleyn(52752)

Question 1015825: What is the function value of f(9) if f(x)=x+13
Click here to see answer by ikleyn(52752)

Question 1015831: find the inverse of G(x)= x^3 +4. Determine the domain and range
Click here to see answer by josgarithmetic(39613)

Question 1015881: Please help me with this question.
f(x)=3x�+3x-3
and find for f(3x)
Click here to see answer by Alan3354(69443)

Question 1015883: Hi, can you please help me with this
f(x)=x/x�+1
and find f(-x)
Thank you
Click here to see answer by Alan3354(69443)

Question 1015896: Can you help me with this problem please.
f(x)=5x+3;g(x)=x� and solve for (f o f)(x)
Thanks so much for helping me
Click here to see answer by Alan3354(69443)

Question 1015890: Can you help me please
f(x)sqrt (x); g(x)=5x+2 and find (f o f) (x)
Thank you so much
Click here to see answer by Alan3354(69443)

Question 1015890: Can you help me please
f(x)sqrt (x); g(x)=5x+2 and find (f o f) (x)
Thank you so much
Click here to see answer by fractalier(6550)

Question 1015893: Can you help me with this problem please
f(x)=9x+7; g(x)=5x and solve for (f o f)(x) and (g o g)(x)
Thank you so much for helping me with this problem.
Click here to see answer by Boreal(15235)

Question 1015892: Please help me with this
f(x); g(x)=9x�+1 and find (g o g)(0)
THnak you so much for helping me
Click here to see answer by Boreal(15235)

Question 1015887: Can you help me with this
f(x)=5x+4; g(x)=7x-1 and find the domain
Click here to see answer by Boreal(15235)

Question 1015887: Can you help me with this
f(x)=5x+4; g(x)=7x-1 and find the domain
Click here to see answer by fractalier(6550)

Question 1015885: Hi can you please help me with this
f(x)=6x+7 and divide this by 5x-6 and find f(-x)
Thank you
Click here to see answer by Boreal(15235)

Question 1015908: Can you help me please.
f(x)=5x+4; g(x)=7x-1 and solve for (f-g)(x)
Thank you
Click here to see answer by fractalier(6550)

Question 1015906: Can you help me please.
f(x)=6x+7 all over 5x-6 and find f(x)
Thank you.
Click here to see answer by Fombitz(32388)

Question 1015942: Can you please help me with this problem.
f(x)=3x�+3x-3
And I need to solve for f(x+h)
Thank you so much
Click here to see answer by Alan3354(69443)

Question 1015943: Can someone please help me with this problem.
f(x)=4x+7 divide that by 7x-4, g(x)=8x divide that by 7x-4 and
solve that with (f-g)(x)
Thank you.
Click here to see answer by Alan3354(69443)

Question 1015941: Can you help me with this problem.
f(x)=5x+4; g(x)=7x-1
and I need to solve for (f*g)(x)
Thank you
Click here to see answer by Alan3354(69443)

Question 1015941: Can you help me with this problem.
f(x)=5x+4; g(x)=7x-1
and I need to solve for (f*g)(x)
Thank you
Click here to see answer by fractalier(6550)

Question 1015949: Which solutions all apply to x^2+14x+40=0
Click here to see answer by Fombitz(32388)

Question 1015948: Which equations all apply to x^2+14x+40=0
Click here to see answer by Fombitz(32388)

Question 1015948: Which equations all apply to x^2+14x+40=0
Click here to see answer by fractalier(6550)

Question 1015962: Hi,
I'm doing my homework and came across a question I've never been presented with before. We have to write equations of a line in standard form using the given statement. One statement reads, "passes through (7, -3) and has a y-intercept of 2." I'm really confused.
Thanks!
Click here to see answer by Alan3354(69443)

Question 1015961: Hi,
I'm working on my homework and came across a confusing problem. Could you possibly help? The problem states: "Write an equation in standard form of the line satisfying the given conditions. 'has no slope and passes through (-6, 4)." Thank you!
Click here to see answer by Alan3354(69443)

Question 1015997: If f(x) =2x-5 and g(x)=2, find
a) f(1)
b) g(2)
c) gf(1)
d) fg(2)
Click here to see answer by ikleyn(52752)

Question 1015994: Imani wants to switch to a new text messaging plan. She is considering the two�monthly text messaging
plans described below.�
Plan E�has a base fee of $6.00 plus $0.10 per text message.
Plan F�has a base fee of $13 plus $0.05 per text message.
Which of the following is true based on the information above?
A. With a budget of $20 per month, both plans provide the same number of text messages.
B. Plan E costs less if Imani�sends more than 150 text messages each month.
C. Plan F costs less if Imani�sends less than 140 text messages each month.
D. With exactly 20 text messages each month, the two plans cost the same amount.

Click here to see answer by macston(5194)

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