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

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Question 366308: I am in the process of learning these things and a way to make it more interesting besides the ol' make it into a word problem thing. Can you help me
Click here to see answer by robertb(4012)

Question 366460: how do i find the domain of f(x)=2-ln(7x)?
and the domain of f(x)=log(4)(x-4)^2?
I am struggling with these....typical for someone out of math for 25 years.
Click here to see answer by robertb(4012)

Question 366461: How do I solve the following to THREE decimal places?
ln x + ln(x+7) = -5
Click here to see answer by robertb(4012)

Question 366482: f(x)=x/4x-7
Click here to see answer by Fombitz(13828)

Question 366586: f(x)=(6x-7)^3+5
find f^-1(x)
Click here to see answer by jim_thompson5910(28598)

Question 366589: f is a one-to-one function. The graph of f(x) contains the points (-16,-3).
Therefore the graph of f^-1(x) must contain the point
(__,__)
Click here to see answer by jim_thompson5910(28598)

Question 366596: The function f(x)= (the absolute value of x+2) + 5 is not a one-to-one function
The points (22,29) and (__,__) prove that f(x) is not a one-to-one function.
What is the other point?
Click here to see answer by jim_thompson5910(28598)

Question 366551: Find the domain of the function. g(x)=10/7-2x
Click here to see answer by Fombitz(13828)

Question 366604: f(x)=(6x-7)^3+5
find f^-1(x)
Click here to see answer by Fombitz(13828)

Question 366725: Write the area A of a circle as a function of it circumference C.
Click here to see answer by Fombitz(13828)

Question 366717: Consider the following function: f(x)=10x^3-29x^2-115x+50 factors: (2x+5)(5x-2)
A) Verify the given factors of the function x
B)Find the remaining factor(s) of f
C) Write the complete factorization of f
I have been able to successfully verify that the given factors are factors of the function, however I am having a hard time finding the other factor(s). Can you please help! Thank you
Click here to see answer by edjones(7569)

Question 366794: If f(x)= 16 - x^2 and the domain is -4 ≤ x ≤ 5 what is the largest value in
the range?

Click here to see answer by Fombitz(13828)

Question 366779: If f = {(0, 2), (2, 4), (4, 2)}, what is the value of f(f(f(0))) + f(f(f(2)))?
Click here to see answer by Fombitz(13828)

Question 366923: f(x)=1/4x
g(x)=1/3x
Click here to see answer by Fombitz(13828)

Question 366863: A function is given below. Determine the average rate of change of the function between x=-1 and x=-1+h.
g(x)= -10/x
Click here to see answer by Fombitz(13828)

Question 366894: log(x+2)/x-6
Click here to see answer by Alan3354(30993)

Question 366979: sketch the graph of y = -1/2x^2-2
find the domain of the function f(x) = x-2/x+4
find the domain of the function g(t) = 5t/t^2-9
use the vertical line test to see if the equations:
y{-x^2, -2(greater than or less than) x (greater than or less than) 2
Click here to see answer by stanbon(57424)

Question 367050: how can i determine limits of real valued function
Click here to see answer by robertb(4012)

Question 367599: I am not sure that I chose the correct topic for the question. It is algebriac, but I am not sure of its specific topic. Anyway, here is the question:
(r+2t)^3+(r-7t)^3
The answer is (2r-5t)(r^2+5rt+67t^2)
I cannot figure out how they got the 67t^2!

Click here to see answer by mananth(12270)

Question 367621: Once again, I am not sure that I got the topic correct.
Here is the question: 9(2x+1)^3+6(2x+1)^2-15(2x+1)
the answer is: 12(2x+1)(3x+4)
I get the whole answer except the latter 4! I am just not sure!
Click here to see answer by Theo(3472)

Question 367732: Please help me find the domain for f(x)=3-4
Click here to see answer by Fombitz(13828)

Question 367753: Composition of Functions problem:
r(t)=q(p(t))
Given:
t | p(t) | q(t) | r(t)
-----------------------------
0 | 4 | ?? | ??
-----------------------------
1 | ?? | 2 | 1
-----------------------------
2 | ?? | ?? | 0
-----------------------------
3 | 2 | 0 | 4
-----------------------------
4 | 1 | 5 | ??
-----------------------------
5 | 0 | 1 | 3
-----------------------------
Fill in ?? with correct answer. I need help with a process to solve this problem.
I can solve r(0)=?? by this method: r(0)=q(p(0)) knowing that r(0) will be equal to q(p(0)), then r(0)=q(4) because I find that p(0) is equal to 4 which becomes q(4), next I see that q(4) is equal to 5, therefore r(0)=5.
I am having difficulty with a process to find for p(t) and q(t).
Any ideas?
Thanks,
Deb
Click here to see answer by stanbon(57424)

Question 368174: g(x)=4/(9-5x)
Find the domain of the function
Click here to see answer by robertb(4012)

Question 368212: Need help is writing the function of the following:
X Y
-2 1/8
-1 1/2
0 2
1 8
2 32
Click here to see answer by scott8148(6628)

Question 368209: g(x) 4/(9-5x)
Find the domain of the function
Click here to see answer by Fombitz(13828)

Question 368432: write a linear function f that has the indicated values
f(1)= -3
f(7)= -8
Click here to see answer by ewatrrr(10682)

Question 368527: solve f(g(x)) when f(x)= 3/(x-8) and g(x)= 5/2x
Click here to see answer by Fombitz(13828)

Question 368495: Given the function q(x)= x^2 - 5, evaluate and simplify each of the following expressions:
-q(x)
q(x-2)
q(x)+2
q(3x)

Click here to see answer by Fombitz(13828)

Question 368738: If f(x) = (2x + 7) / 5, what is the value of x for which f(x) equals 0? Can you show me the step by step to solve this?
Click here to see answer by rfer(12678)

Question 368831: Given the function g described by g(x)=6x find each of the folowing.
a.g(-10)
b.g(13)
c.g(28)
Click here to see answer by user_dude2008(1861)

Question 368831: Given the function g described by g(x)=6x find each of the folowing.
a.g(-10)
b.g(13)
c.g(28)
Click here to see answer by neatmath(300)

Question 369008: Does the quadratic function f(x) = -(x + 5)2 – 3 have a maximum or minimum value? What is it?
Click here to see answer by Fombitz(13828)

Question 369284: I need finding problem. here is the question given the function f describe by f (x)=x+7 find f (-10)=
Click here to see answer by robertb(4012)

Question 369117: Verify that the two functions are inverse functions algebraically
f(x)= 4x+9 g(x)= x-9/4
Click here to see answer by jsmallt9(3296)

Question 369469: Is (1,3) (5,4) (1,7) (9,4) a function? I don't understnad how to do them.
Click here to see answer by Fombitz(13828)

Question 369508: what is the x and y values of the function y=-2x^3 and how do you graph it?
Click here to see answer by Alan3354(30993)

Question 369564: Julissa can unload a ship’s cargo twice as fast as Chris. Together, they can unload the cargo in 4 hours. How long would it take each of them working alone to unload the cargo?

Click here to see answer by ewatrrr(10682)

Question 369703: y= in absolute vaule signs x then - 3
Click here to see answer by Fombitz(13828)

Question 369667: Give your own example of a function using a set of at least 4 ordered pairs. The DOMAIN will be any four integers between 0 and +10. The RANGE will be any four integers between -12 and 5.
Click here to see answer by Fombitz(13828)

Question 369844: find f of g if f(x)= x-x squared and g(x)= x-2
Click here to see answer by robertb(4012)

Question 369852: Use composition to prove that f(x)=x+7/-2 is the inverse of g(x)=-2x-7
Click here to see answer by robertb(4012)

Question 369859: find f of g if f(x)= x-x² and g(x)= x-2
Click here to see answer by stanbon(57424)

Question 369884: how many solutions does the system 2y=10x-14 and 5x-y=7 have?
Click here to see answer by mananth(12270)

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