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

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Question 921681: i am stuck on the following hw problem .
Click here to see answer by richwmiller(17219) About Me 

Question 921682: i am stuck on the following math hw problem. included is a pic of the probem
http://imgur.com/Kwn8quw
any help would be appreciated

Click here to see answer by Theo(13342) About Me 

Question 921680: i am stuck on the following hw problem.
Click here to see answer by richwmiller(17219) About Me 

Question 921672: i am stuck on the following hw problem, included is a pic of the problem

Click here to see answer by richwmiller(17219) About Me 

Question 921683: i am stuck on the following hw problem. included is a pic of the problem
http://imgur.com/IPhMu79
any help would be appreciated

Click here to see answer by KMST(5328) About Me 

Question 921679: i am stuck on the following hw problem.
Click here to see answer by richwmiller(17219) About Me 

Question 921676: i am stuck on the following hw problem.
Click here to see answer by richwmiller(17219) About Me 

Question 921674: i am stuck on the following hw problem.
Click here to see answer by richwmiller(17219) About Me 

Question 921673: i am stuck on the following match hw problem.
Click here to see answer by richwmiller(17219) About Me 

Question 921713: i am stuck on the following problem

suppose h is a function defined by h(x)=(fog)(x). if h(x)=absolute value -11x-6, what is f(x)

any help would be appreciated

Click here to see answer by richard1234(7193) About Me 

Question 921900: How do I determine whether an equation defines y as a function of x?
For example 5x+7y=10

Click here to see answer by KMST(5328) About Me 

Question 922279: i truthfully am stuck on this math problem, here is a pic of the problem
http://imgur.com/viPHSDt
please help in any way possible

Click here to see answer by josgarithmetic(39618) About Me 

Question 922307: If f(x) = (4x-1)/ (4x+2) determine a formula for f^-1(x)
Click here to see answer by josgarithmetic(39618) About Me 

Question 922278: i really am stuck on the following math problem. here is a pic of the problem
http://imgur.com/u0KdA4N
please help as soon as u can

Click here to see answer by josgarithmetic(39618) About Me 

Question 921699: h(x)= -2 if x does not equal 1
2 if x does equal 1
Find:
h(-5)
h(1)
h(5)

Click here to see answer by richard1234(7193) About Me 

Question 922418: PLEASE SOME ONE HELP ME IF CAN PLEASE
IF(K+1/K)^2=16,THEN K^2+1/K^2=

Click here to see answer by ewatrrr(24785) About Me 

Question 922416: FOR X,Y>0,WHICH expression is equal to 1/1/x+1/y?
(A)X+Y
(B)X+Y/XY
(C)XY/X+Y
(D)X/Y+Y/X
(E)1/XY

Click here to see answer by ewatrrr(24785) About Me 

Question 922503: the solution set of |x+2| < 5 ?
i have tried:
x+2=0 and x-2=0
then solving

Click here to see answer by ewatrrr(24785) About Me 

Question 922772: x%5Ea%2Ax%5Eb%2Ax%5Ec=1
then find a%5E3%2Bb%5E3%2Bc%5E3

Click here to see answer by MathLover1(20850) About Me 

Question 922774: How much larger is 99%5E2 than 49%5E2+%2B+50%5E2 ?
Click here to see answer by MathLover1(20850) About Me 

Question 922855: Determine whether there is a maximum or minimum value for the given function, and find that value.
f(x)=-x^2+3x-5

Click here to see answer by Fombitz(32388) About Me 

Question 923438: The question is: You are working on saving for retirement. You will reach full retirement age in 20 years, and you can invest $5000 each year and can earn 7% annually during this period. How much money will you have as you enter the retirement phase of your life, from this investment?
I cannot seem to find the formula for this. Please help!

Click here to see answer by jim_thompson5910(35256) About Me 

Question 923481: The half life of Iron-55 is approximately 2.7 years.
Determine a so that A(t)=Aoa^t describes the amount of iron-55 left after t years where Ao is the amount at time t=0. Round to 6 decimal places.

Click here to see answer by josgarithmetic(39618) About Me 

Question 923628: The half life of Iron-55 is approximately 2.7 years. How much of a 5 gram sample of Iron-55 would remain after 6 years? Round to 3 decimal places.
Answer to part 1: a=0.773584

Click here to see answer by ewatrrr(24785) About Me 

Question 923703: A line passes through the points (p, a) and (p, –a) where p and a are real numbers. If p=0, what is the y-intercept? Explain your reasoning.

Click here to see answer by TimothyLamb(4379) About Me 

Question 923755: I have been pounding my head for 2 days trying to figure out the right equation for this problem and I am hoping someone here can help.
What is the amount a person would have to deposit today to be able to take out $5000 a year for 10 years from an account earning 8 percent annually?
Thanks!

Click here to see answer by josgarithmetic(39618) About Me 
Question 923755: I have been pounding my head for 2 days trying to figure out the right equation for this problem and I am hoping someone here can help.
What is the amount a person would have to deposit today to be able to take out $5000 a year for 10 years from an account earning 8 percent annually?
Thanks!

Click here to see answer by KMST(5328) About Me 

Question 923866: How do you find the domain of the function -> f(x) = sqrt(-1/x) ?
Click here to see answer by MathLover1(20850) About Me 

Question 923974: Write the solution to this problem as an ordered pair:
x - y = 5 & x + 11y = -16

Click here to see answer by MathLover1(20850) About Me 

Question 923871: how do you find the domain of the function when f(x) = sqrt(r^2-(x-h)^2)
Click here to see answer by josgarithmetic(39618) About Me 

Question 924249: Hello I am Imani I am new to algebra this year. Im trying very hard I have started to try and answer this but i keep getting a weird answer.
F(x)=x-3

Click here to see answer by Alan3354(69443) About Me 

Question 924810: Find the equation of a line and write it in function notation.
through (3, -8) and perpendicular to 8y= x-16

please help and thank you!!!

Click here to see answer by rothauserc(4718) About Me 

Question 924842: Evaluate the function y = 15 – x when x = –4

Click here to see answer by ewatrrr(24785) About Me 

Question 924901: Let f(x)=16-x^2 and g(x)=4-x. Find f(x)-g(x)
Click here to see answer by TimothyLamb(4379) About Me 

Question 924903: Let f(x)=1-x^2 and g(x)=1/x. Find the indicated value
Click here to see answer by Alan3354(69443) About Me 

Question 925245: find the domain f(x)=4-In(5x)
Click here to see answer by Fombitz(32388) About Me 

Question 925425: Find the equation of the line. Write the equation using function notation.
Through (8, -1) and perpendicular to 8y=x-16

Click here to see answer by MathLover1(20850) About Me 

Question 925394: Identify the correlation you would expect to see between each pair of data sets. Explain.
A person's shoe size and the length of the person's hair.

Click here to see answer by richard1234(7193) About Me 

Question 925476: Identifying The Domain of a Quadratic Function
1) y=-x^2+7x+1
2) y=-3/5x^2+21x-3
3) f(x)=4x^2+5x-12
4) g(x)=x^2+12x-8

Click here to see answer by jim_thompson5910(35256) About Me 

Question 925615: given f(x)=8x-7,if the value of x is 5.
Click here to see answer by Edwin McCravy(20056) About Me 

Question 925775: Is x+2/3 a factor of f(x)=6x^2-x-2?
Click here to see answer by josgarithmetic(39618) About Me 

Question 926258: Given below is the even-number function. Which of the following are equal to E(7)? Check all that apply.
A.14
B.49
C.27
D.The seventh even number

Click here to see answer by rothauserc(4718) About Me 
Question 926258: Given below is the even-number function. Which of the following are equal to E(7)? Check all that apply.
A.14
B.49
C.27
D.The seventh even number

Click here to see answer by Edwin McCravy(20056) About Me 

Question 926502: The domain of f(x)=9x^2-2x)/(x^2-6x-5)
Click here to see answer by harpazo(655) About Me 

Question 926684: Honsetly i have no idea what catogory this would fall under but i have to solve
2n cubed-30n squared+100n=0

Click here to see answer by MathLover1(20850) About Me 

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