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

Tutors Answer Your Questions about Functions (FREE)

Question 556131: Find all numbers for which the rational expression is undefined.
m^3-9m/m^2-64=
Click here to see answer by fcabanski(1391)

Question 556140: what is the horizontal asymptote given g(x)=1/2x+4
Click here to see answer by lwsshak3(11628)

Question 556129: to determine the number of deer in a game preserve, a conservationist catches 426 deer, tags them and lets them loose. Later, 700 deer are caught; 175 of them are tagged. How many deer are in the preserve?
Click here to see answer by Theo(13342)

Question 556231: x+7+x=15
Click here to see answer by Theo(13342)

Question 556281: find the y-intercept of a line with the equation
y= -3/13x + 13/6
Click here to see answer by nerdybill(7384)

Question 556736: Find the domain of the function f(x) = 3x-1
Click here to see answer by jim_thompson5910(35256)

Question 557006: show me the steps to find the answer to (-7+5i)-(-9-11i)
Click here to see answer by Alan3354(69443)

Question 557035: how to graph function f(x) = |-x-3|
Click here to see answer by solver91311(24713)

Question 557034: what is not a perfect square trinomial? a) X^2 -6x-9 b) x^2-8x+16 c) x^2-2x+1 d) x^2+10x+25 If anyone could please be my toutor id really apprecate it. i Fell far behind in amth and i need to get caught up
Click here to see answer by KMST(5328)

Question 557269: if f(x+3)=5x+6 find f(x)
Click here to see answer by richard1234(7193)

Question 557038: Thank you so much for the help! Do you know how to graph functions?
Click here to see answer by richard1234(7193)

Question 557307: (4x^6)^2 (10x)^3 is the problem 16000x^15
what are the steps try to figure out - thanks you
Click here to see answer by mananth(16946)

Question 557319: the domain of the function sqrt of x(x-2)=
must be written in interval notation
Click here to see answer by stanbon(75887)

Question 557350: what is the domain of the function sqrt((10x)/(x^2-324))
Click here to see answer by Theo(13342)

Question 557449: Range of function sqrt(x^2-2x+5). Why is the range ≥2?, without graphing
Click here to see answer by stanbon(75887)

Question 557449: Range of function sqrt(x^2-2x+5). Why is the range ≥2?, without graphing
Click here to see answer by Theo(13342)

Question 557851: Given the function f(x) = 2x + 2, what is the value of x if f(x) = 6?
Click here to see answer by Alan3354(69443)

Question 558182: Can someone please help me answer these?

Consider the example of the states of the United States and their U.S. senators. You can say that the senators are not a function of the states because each state has more than one senator. However, you can say that the states are a function of the senators because each senator is associated with only one state.
Make up your own examples of two real-world sets, with each set having more than one element.
Discuss how elements of those sets can be paired.
Explain whether one of the sets can be considered a function of the other.
Address the following regarding linear and nonlinear functions:
Explain the difference between a linear and nonlinear function. Point out a specific type of nonlinear function to help explain the difference.
Are linear/nonlinear equations the same as linear/nonlinear functions? What are the differences you see between equations and functions? Try to emphasize when one would use an equation or a function in a real-life application.
Click here to see answer by richard1234(7193)

Question 558613: I am a little confused about this one. Can someone help me?
Investing is an important topic for individuals in all areas. Suppose you wish to invest $10,000 in a money market account that earns 4% interest compounded annually. How much would the investment be worth after 10 years? Show all calculations.
Now, suppose that the above investment earns interest compounded quarterly. How much would the same investment be worth after 10 years? Why does the result differ from the previous one?
Click here to see answer by KMST(5328)

Question 558765: find the domain of the given function: f(x)=(-15)/(x-3)

Click here to see answer by rapaljer(4671)

Question 558966: (x)/(3) + (x)/(7) <2
Click here to see answer by stanbon(75887)

Question 558998: Can you evalute this expression: g(√8)
Given that f(x) = 2x+1/3-5x and g(y) = 1/√y�+1
?
Click here to see answer by JBarnum(2146)

Question 559026: can you please give me steps to
find the domain of f(x)=(16x+3)/(x^2+6x-72) ?
thanks you in advanced
Click here to see answer by htmentor(1343)

Question 559250: Find the domain of the following function . F(x)=5/x-8. Answer should be in interval notation.
Click here to see answer by nyc_function(2741)

Question 559342: What is the domain for the function (3x^3-4)/(x^2+5x-6) Thanks!!
Click here to see answer by stanbon(75887)

Question 559335: Hello!
I have been given a function table with missing steps. I have completed the table up to the input of 10:
Input/Output
1/8
2/14
3/18
4/24
5/28
6/34
7/38
8/44
9/48
10/54
I need to find a rule to determine the value of y when given the value of x. I have been working on this for several hours now, and the only thing that I can see is that the value of y goes up by 6 when x is an even number, and y goes up by 4 when x is odd. I feel like this solution is more simple than I'm making it, but I can't make sense of it right now. Could you help me come up with a rule for this function table, please? Thank you.
Jennifer
Click here to see answer by KMST(5328)

Question 559538: How Do You Know If A Parabola Is A Function ?
Click here to see answer by josmiceli(19441)

Question 559661: hi what would the domain of 5x/x^3+36x be i've tried to find what number would give me 36 but i don't know if that's the right method
Click here to see answer by KMST(5328)

Question 559979: Given the function f(x)= |x+6|, find each of the following:
f(7)
f(-9)
f(0)
Need some help! Thanks
Click here to see answer by jim_thompson5910(35256)

Question 560105: We are learning about functions and linear functions. The question is about depreciation. Suppose the cost of a business property is $860,000 and a company depreciates it with the straigh-line method. Suppose y is the value of the property after t years.
How do I set the equation up?
I did this but I honestly don't know what I'm doing: y+t=860000
Click here to see answer by stanbon(75887)

Question 560338: Find functions f and g such that f(g(x))=h(x)
a) h(x)=3x^2+7
b) h(x)=|2x+9|
c) h(x)=21x
Click here to see answer by stanbon(75887)

Question 560636: Given the function H(z) = 8z+8 find each of the following:
H(7)=
H(-5)=
H(6.9)=
Click here to see answer by jim_thompson5910(35256)

Question 560783: I'm having trouble writing the domain as a interval notation, but here is the question:
The domain of the function is f(x) = -12x+17 / (x^2)-7x+10.
Write the answer in interval notation.
I got that x=2 and x=5, so therefore the domain cannot be 2 or 5. So, the interval notation is (-infinity, 2)U(5,infinity). Is this correct?
Click here to see answer by jim_thompson5910(35256)

Question 560797: Evaluate f(x)=2x^2 -5x. If: f(-2)
Click here to see answer by jim_thompson5910(35256)

Question 560907: Please help me with this question. What is the range of f(x)=sqrt(3x+7). The domain is x equal to/greater than -7/3.
Click here to see answer by stanbon(75887)

Question 561004: what is the domain of (-6x+9)/(x^2-7x+12)?
Click here to see answer by scott8148(6628)

Question 561004: what is the domain of (-6x+9)/(x^2-7x+12)?
Click here to see answer by stanbon(75887)

Question 561240: Is f(x)=15 or f(x)=12 a function or not?
Click here to see answer by jim_thompson5910(35256)

Question 561602: Hello. so my math problem is:
Solve the equation graphically in the given interval. State each answer correct to two decimals.

x3 − 12x2 + 47x − 60 = 0; [−1, 6].

I am not sure how to start this. Do I plug -1 and 6 into the equation?
Click here to see answer by ankor@dixie-net.com(22740)

Question 561888: I have a chapter 5 test review and have gone to my math teacher for help today but it still did not help. I do not understand what a function is. He says that f isn't important. But that just confused me even more. The question is "Write the function that has the given values in slope-intercept form." The numbers are f(0)=3, f(-2)=-7. If you could help me this would be great. I am in 9th grade and take algebra 1. Thank you for your time!
Click here to see answer by richard1234(7193)

Question 562202: (x)/(x^(2)+9x+20)-(4)/(x^(2)+7x+12)
Click here to see answer by stanbon(75887)

Question 562038:
Find g(x)+5
I'm not sure how to go about finding the value of g(x)+5 since there is still a variable and the +5 is on the outside of the parenthesis, but on the left side of the "equation."
Click here to see answer by richard1234(7193)

Question 562208: What is the range of y=sqrt(16-x^2)
Click here to see answer by stanbon(75887)

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