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

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Question 98421: Divide.
50p9q5/10pq2
and please show me how...I am struggling with figuring this out.

Click here to see answer by jim_thompson5910(35256)

Question 98525: Find the domain of the function.
h(x) = x-4/x3-64x
note: x3 is x to 3rd degree
and and it is a fraction
thanks

Click here to see answer by stanbon(75887)

Question 98522: Determine whether the relation represents a function. If it is a function, state the domain and range.
{(-3, 6), (2, 3), (3, -5), (8, -2)}
a. function
domain: {-3, 2, 3, 8}
range: {6, 3, -5, -2}
b. function
domain: {6, 3, -5, -2}
range: {-3, 2, 3, 8}
c. not a funtion??

Click here to see answer by jim_thompson5910(35256)

Question 98816: How do I do this problem: 5x-3=2
Click here to see answer by scott8148(6628)

Question 98839: y=x-3
domain:12,15,22,30
idantify the range of the function
Click here to see answer by malakumar_kos@yahoo.com(315)

Question 98862: if P (4, -5) is a point on the graph of the function y = f(x) find the corresponding point on the graph of y = 2f(x - 6)
Click here to see answer by stanbon(75887)

Question 98781: f(x)=a
f(a)=3(a)+7
and f(x)= 5x-8
find all x and y intercepts.
Can you show me step by step please thank you.
Click here to see answer by elima(1433)

Question 99100: if a collection of cows and crows have 43 heads and 120 feet, how many of each are there?
Click here to see answer by checkley71(8403)

Question 99201: hi I have a problem that i'm not sure how to do.
the directions are - Suppose f(x)= 2x - 5 and g(x)=|-3-1| Find each value.
the problem is

I dont understand what I have to do. I know how to substitute things when there is an x but not when there is a number and it's really confusing me! Could you please help me out!
Click here to see answer by Adam(64)

Question 99232: I have to graph these functions.
y = |5x - 3| + 1
and

I know how to do these problems in general but these to don't seem to go along with what I was taught to do. Maybe I'm not seeing something or just having a brain blank but I can't seem to figure them out. Can someone PLEASE help me!!!
Click here to see answer by stanbon(75887)

Question 99371: Find the domain?
K(x) = x-2/x-3 - write the answer in interval notation..

now on this proplem i know the asnwer is (- infinity, 3) U (3, infinity)
but how do i figure that out??
Click here to see answer by jim_thompson5910(35256)

Question 98006: 22/21 = 127/x
what is the value of x?
I have 121.27272727...
but I dont think that is right.
Click here to see answer by timmy1729(23)

Question 99489: 256-32=224
Click here to see answer by Ajahnae07(1)

Question 99526: This problem is not from a book. I've solved every other problem on my worksheet but cannot seem to get this one. Please help!!!
Given f(x) = 12x^2 - 53x +55, solve f(x)"< or=" 0.
Express your answer using interval notation. If you need to use -infinity, type -INFINITY. If you need to use positive infinity, type INFINITY. Use fractions as needed.
Please note: I didn't know how to type "less than or equal" in this kind of message, so I put "< or=."
Thanks!

Click here to see answer by edjones(8007)

Question 99492: write a function for each situation.
the volume V(n)of a cube when you know the length n of a side.
Click here to see answer by 303795(602)

Question 99622: f(x)=(x+3)squared, f(4)
Click here to see answer by edjones(8007)

Question 99656: 1. Find the inverse of the function f(x)=x^1/3+2.
2. A bacteria culture started with a count of 720 at 8:00 A.M., and after t hours is expected to grow to f(t)=720(2/3)^t. estimate the number of bacteria in the culture at 11:00A.M. the same day.
3. if f(x)=(x+1)(x-4), use interval notation to give all values of x where f(x)>0.
4. express as a polynominal: (x+a)(x^2-ax/x).
Click here to see answer by stanbon(75887)

Question 99696: my teacher has tired to explain this to me but i still do not understandstand
can u please explain to m how to solve this complicated problem. thank you
evaulate if f:x--> 4-x{squared} and g:x--> {absolute value} 2x-3
problem:
g(f(-1))

thank you again
Click here to see answer by mdalis(5)

Question 99811: A passenger on a train traveling at 135 km/h walks toward the back of the train at a rate of 7 km/h. What is the passenger's rate of travel with respect to the ground?
Click here to see answer by Adam(64)

Question 99907: I need to know what the domain is of this problem. y=1 over 3x
Click here to see answer by aaaaaaaa(138)

Question 99947: find the domain of:
f(x) = 6/x , g(x) = 1/2x + 1
Click here to see answer by tutorcecilia(2152)

Question 100140: What is the domain of the function:
f(x) = 2x + 3 when the range is {5,7,9}?
f(x) = 1/4x + 3 when the range is {3, -17, 27}?
f(x) = -3x - 5 when the range is {-2, 0, 3}?
Click here to see answer by stanbon(75887)

Question 100166: Please help me solve this equation: f(x)=3x(2x-1).f(-1)=
Click here to see answer by bucky(2189)

Question 100466: Multiply. Write answer in lowest terms.
4uz/u * 9u/8z
Click here to see answer by checkley71(8403)

Question 100547: 1) find F(0) when f(x)=x^2-5x-7
2) Find F(17) when f(x)=|x-16|

all help is appreciated
Click here to see answer by bucky(2189)

Question 100714: Find the domain and range
f(x)= 2- x^2
Click here to see answer by edjones(8007)

Question 100714: Find the domain and range
f(x)= 2- x^2
Click here to see answer by stanbon(75887)

Question 100850: I do not understand how to work this problem: y=x^3-8x. I know that the y-intercept is (0,0), but I can not figure out how to find the x-intercepts.
Click here to see answer by stanbon(75887)

Question 100830: 25u + 74 = 23u + 92
Click here to see answer by diamonddarby2(3)

Question 100911: Cesium 13 is a radioactive element with a half life of 30 years. Predict how much of a 60mg sample of cesium137 would remain after 210 years. I am trying to figure out the formula to solve this Thanks
Click here to see answer by scott8148(6628)

Question 101133: when trying to find a function you put in 2,5,4,3,and get out 4,13,10,7.
What is the function is it that I am trying to find? and what is the answer in the form of x>>something.
Click here to see answer by stanbon(75887)

Question 101197: Find the difference quutient :
f(x + h) - f(x)
_________________ (h does not equal 0)
h
f(x) = 2 + 4x
Click here to see answer by stanbon(75887)

Question 101203: f(x) = 2x -1
g(x) = Square root (x-1)
Find the domain of f, g, f+g, f-g, fg, ff, f/g, and g/f.

I actually got the answers to the domain of f and g, but i'm confused on how to find the others based on just f and g.
Like for the domain of f, I got (-infinity, positive infinity)
then for the domain of g, (negative infinity, 1) U (1, positive infinity)

Click here to see answer by stanbon(75887)

Question 101210: please help!..Find the domain and Range of the function
f(x)= 2 / x-2
**the / = fraction bar not division..thanks!
Click here to see answer by stanbon(75887)

Question 101230: I am having difficulty with functions, can someone please help. Determine which functions are inverse to each other. f(x)=6x, g(x)=x/6, h(x)=6/x
Thank you

Click here to see answer by MathLover1(20849)

Question 101232: My book from Granthum U does not show how to do this one.
Find functions f and g so that h(x)=(f'g)(x)

Thanx
Click here to see answer by stanbon(75887)

Question 101231: Brain Freeze can't remember. Given functions F and G dtermine the domain of f+g: f(x)=5x-8,g(x)=5/x-2
Thank you for you help

Click here to see answer by stanbon(75887)

Question 101324: 2[3x+2(x+1)]
Click here to see answer by ckaeser(6)

Question 101477: Need help, find the domain of the composite function f*g; f(x)=^/x;g(x)=4x+4
Thank you

Click here to see answer by stanbon(75887)

Question 101480: for the given functions f ands g find the indicated composition. , Can someone verify my answer or ley me know what I am doing wrong, thank you
Click here to see answer by edjones(8007)

Question 101476: I need help. Find functions f and g so that h(x)= (f*g)(x).
.
Choices are
,or ,or ,or ,
Thank you
Click here to see answer by edjones(8007)

Question 101478: i need to make sure I did this one right. Find the domain the function. my answer is (-oo,-4)(-4,0)(0,-4)(4,oo)
Click here to see answer by stanbon(75887)

Question 101492: Find domain and range of the function square root of x
Domain:
Range:
Write the answer in intervalnotation. use infinity if needed(spell it out)
---I got [1, infinity) for the domain, and [0, infinity)---
it said it was wrong. I dont know what else to do.
Click here to see answer by edjones(8007)

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