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

Tutors Answer Your Questions about Functions (FREE)

Question 702296: If g(x)=3x and h(x)=x^3-x^2+x-1 , find [h�g] (x)
Click here to see answer by MathLover1(20849)

Question 702357: I have to use a graph of g to answer the questions. Assume the domain of g is [-4,4].
what does g(4)=?
what does g(-2)=?
For how many values of g does g(x)=.08?
For what value(s) is g=0?
Click here to see answer by Edwin McCravy(20054)

Question 702391: If f(x)=3x-2 what is (f^-1)(5) and (f^-1)(y)?
Click here to see answer by jim_thompson5910(35256)

Question 702404: Please help me I need someone to Email me first to ask the question

Click here to see answer by solver91311(24713)

Question 702470: What is the value of n if f(x)=-5x+11 and f(n)=21?
Click here to see answer by jim_thompson5910(35256)

Question 702797: k-4<10
Click here to see answer by mathbird(71)

Question 702803: Solve G(x) for the given domain.
G(x) = 3x 2 - 2x - 1
G(a + b) =
Click here to see answer by stanbon(75887)

Question 702882: find f(x-1) when f(x)= 4x^(2)-3x+3
Click here to see answer by jpvn2015(54)

Question 703101: G(X)= 2X+10
Find G (2-h)-G(3)/h

Click here to see answer by MathLover1(20849)

Question 703277: Find the domain of f(x)=5x-6;g(x)=7x+6
Click here to see answer by Nfrey78(18)

Question 703395: What is the function for (5,19)(2,10)(-3,-5)
Click here to see answer by AnlytcPhil(1806)

Question 703697: what is the range of f(x)=|x-3|+2
Click here to see answer by Nfrey78(18)

Question 703038: A metal alloy is a metal made by blending 2 or more types of metal.A jeweler has supplies of two metal alloys. One alloy is 30% gold and the other is 10% gold. How much of each alloy should the jeweler combine to create 4 kg of an alloy containing 15% gold?

Click here to see answer by josgarithmetic(39613)

Question 703826: Hi there, I am just stuck on a basic rule I have forgotten. I was given this problem:
f(x)=x^2+6, find and simplify 2f(t).
I am used to using functions and plugging in t for x in this case. I just don't know what to do with the 2. I tried 2(t^2+6), giving me 2t^2+12, but that is incorrect. Can you help me figure out what to do with that 2 please? I appreciate your help.
Best,
Brian
Click here to see answer by jim_thompson5910(35256)

Question 703857: x/2-x/3=1

Click here to see answer by Simnepi(216)

Question 703975: f(x)=x^4-4x^2 explain why it is a function? b.find the y and x intercepts c. find the domain of the function and express your answer in interval notation
Click here to see answer by lwsshak3(11628)

Question 704134: f(x)=2 find f(-2)
I am unable to figure out this problem....please help???
Thanks,
Heather
Click here to see answer by jim_thompson5910(35256)

Question 704128: What is g(-2.3) when f(x)=4x-5
Click here to see answer by jim_thompson5910(35256)

Question 704245: g(2y)=3(2y)^2-4(2y)-1
Click here to see answer by lynnlo(4176)

Question 704329: I am having a problem with fully understanding how to get an answer for these questions. I seriously do not understand how to get the domain, but I think I figured it out. If anyone can tell me where I went wrong it very simple terms that would be great. I apologize about there being more than 1 question.
1. Find the indicated function value.f(x) = x - 2, g(x) = x + 1Find (f + g)(-1)
Answer: -2 + 1 * -1 = 1
2. Find the domain of the function.f(x) = -3x + 2
Answer: (-∞, ∞)
3.For the pair of functions, determine the domain of f + g.f(x) = 2x + -9, g(x) = 4x + -3
Answer: (-∞, 0) or (0, ∞)
4. Find the requested value.f(x) = 2x2 - 1, g(x) = x + 1Find f(4) - g(4).
Answer: 34
5. For the pair of functions, determine the domain of f + g.f(x) = 4x + 3, g(x) = 3x + 8
Answer: (-∞, -4) or (-4, ∞)
Click here to see answer by KMST(5328)

Question 704463: can you help simplify and state the domain please: 60b^2 over 30b^2+20b
Click here to see answer by stanbon(75887)

Question 704818: Given that the domain of y = x + 2 is {x | -2 < x < 5}, find the range.

Click here to see answer by stanbon(75887)

Question 704973: state the domain for 7/x-5
Click here to see answer by jim_thompson5910(35256)

Question 705620: How do you solve f(x)=2x-5 , g(x)=4x-5 ?
Click here to see answer by josgarithmetic(39613)

Question 705723: Solve 2sin x - cos^2 x = 2 ober the domain 0 < x < 2pie
Click here to see answer by stanbon(75887)

Question 705930: consider f(x) = 3x-1 and g(x) = x+2, Find f(g(x))
Click here to see answer by jim_thompson5910(35256)

Question 705928: Find the function of f(0), f(3), and f(-3)
Click here to see answer by jim_thompson5910(35256)

Question 705969: graph each function, and state its domain and range x=(y+2)^2
Click here to see answer by Alan3354(69443)

Question 706017: please help me identify the domain of this function: g(x)=3x/x^2-36
Click here to see answer by solver91311(24713)

Question 706046: please help me find the x and y intercepts and the range of the following: f(x)=x^2-6x+4
Click here to see answer by stanbon(75887)

Question 706184: f(x) = x+3; g(x) = x squared + 1. what is f(g(1)) ?
Click here to see answer by stanbon(75887)

Question 706269: domain of y = sin(x)+7
Click here to see answer by jim_thompson5910(35256)

Question 706270: please help me graph y = 3sin(x+pi/3)+2
Click here to see answer by jim_thompson5910(35256)

Question 706246: f(x) = -2 over x +7
Click here to see answer by jim_thompson5910(35256)

Question 706296: f(x)=-1+1/2x

Click here to see answer by jim_thompson5910(35256)

Question 706328: Simplify and state restrictions (if any)

((x^2-16)/(x^2+5x+6))/((x^2+5x+4)/(x^2-2x-8))
Click here to see answer by jim_thompson5910(35256)

Question 706355: The sum of 7 divided by a number x and 9
Click here to see answer by jim_thompson5910(35256)

Question 706382: Can anyone please provide step-by-step ways to solve this:
If x+ 1/x =2, then prove that x√x + 1/x√x = 2
Click here to see answer by josgarithmetic(39613)

Question 706400: Factoring a^2 - 8ab/3 - b^2
Click here to see answer by jsmallt9(3758)

Question 706398: How to factor this?
a^2 - 8ab/3 - b^2
Click here to see answer by jsmallt9(3758)

Question 706169: I need help solving this problem: Given the function f(x) = -5x(the x is squared)�+ 10x - 9, what is the domain of f?
Click here to see answer by jsmallt9(3758)

Question 706436: I need to factorize this
8x�-4x-1
Click here to see answer by filboi(35)

Question 705979: (x+4)^2+9(x+4)-6
Click here to see answer by filboi(35)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660