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

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Question 651567: LET HELP ME SOLVE THIS PROBLEM : X^2-3X-54/X^2-X-42 Find the domain and range?
Click here to see answer by stanbon(75887) About Me 

Question 651620: Hello. Can someone please help me, I am running out of time in gettng this turned in and I am having problems.
Given the following piecewise function:
f(x)+{x+11 for -7 -
{ 4 for -2 - -
{3x-9 for x>1
I hope I put this right.

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

Question 651609: Please help me solve this equation: -2x^-3 * x^3
Click here to see answer by lynnlo(4176) About Me 

Question 651610: Please help me solve this equation: (4y^-7)(-2y^-1)
Thank you.

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Question 652189: i need to find a function whose domain is (-∞, 3) ∪ (3, ∞).
i am totally blanking on who to do it.

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

Question 652251: Find the domain of the function g(x)=x+7/x^2-36

Any help would be appreciated!
Thank you.
Rae Henson

Click here to see answer by Shana-D77(132) About Me 

Question 652546: simplify the fractional expression
1"over"(x + h)^2 - 1"over" x^2(all over)H

Click here to see answer by MathLover1(20849) About Me 

Question 652581: If the range of the function
y=(1/5)x+1
is {-2, 3, 6}, then what is the corresponding domain?
A. {-16, 9, 24}
B. {-15, 10, 26}
C. {-11, 14, 29}
D. {-15, 10, 25}

Click here to see answer by Edwin McCravy(20054) About Me 

Question 652962: input x: 1,2,4,5,6,8,9
outputy: 7,9,13,?,?,?
I cant find a correct expression for this prob.

Click here to see answer by solver91311(24713) About Me 

Question 652970: given the function y=|x-2|,what is the output, if your input is 45? what if you input -6?
Click here to see answer by Shana-D77(132) About Me 

Question 653229: if f(x)=2x and g(x)=x-4 what is the value of f[g(3)]
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Question 653369: How can I solve to find the domain of this equation ?? F(x)=(x-1)(x+2) and f(x)=square roof of 25-x^2
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Question 653502: Find the average rate of change of the function from x1 to x2.
f(x)= 3x from x1 = 0 to x2=5 f(x)= x2 + 2x from x1 = 3 to x2=5
thank you. hope to get an answer tonight so I can do my homework.

Click here to see answer by solver91311(24713) About Me 

Question 653630: What is the rule of a function with a domain of 0, 4, 8, 12 and a range of 5, 7, 9, 11?
Click here to see answer by Earlsdon(6294) About Me 

Question 653696: find doman: I don't understand how to find it.
12/(x^2-5x)

Click here to see answer by lwsshak3(11628) About Me 

Question 653737: 9-20x=16x
Click here to see answer by lynnlo(4176) About Me 

Question 653887: ((2x-3)+3)/2
Click here to see answer by MathLover1(20849) About Me 

Question 653884: Find the domain, in interval notation, for the following function:
f(x)=(x^2-4x-21)/sqrt(2x-5)

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Question 654259: If provided a graph of a relation (ITS NOT A FUNCTION), how do you determine the domain and range, which should be written in interval notation?
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Question 654312: -7<1/x less than or equal to 1
what is the solution?


Click here to see answer by lwsshak3(11628) About Me 

Question 654396: Find the domain. f(x)=2x
Click here to see answer by lynnlo(4176) About Me 

Question 654445: EVALUATE THE FUNCTION
f(x)=-4x-3; f(-3)

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

Question 654393: Parent function f(x)=IxI, describe the transformations on f(x+2)-6
Click here to see answer by jim_thompson5910(35256) About Me 

Question 654806: if the funtions domain is 1,2,3,4 and the range is 3,7,11, and 15 what is the rule?

Click here to see answer by MathLover1(20849) About Me 

Question 654815: HOW do you find the difference quotient and simplification of g(x)=1/x^2
g(x)-g(3)/x-3 when h does not equal Zero. I know that you must plug it in to the "x"s and you find a common denominator for the top fraction, but i'm stuck there.

Click here to see answer by MathLover1(20849) About Me 

Question 655172: f(x)= 4|x-4|
Increasing? Decreasing? Constant? On?

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Question 655535: The ideal weight w(in pounds) of a man is a function of his height h(in inches). This function is defined by: w(h) = 5h - 190
What should the height be for a man who weighs 200lb?

I substituted 200 to w making an equation of 200(h) = 5h - 190. Then, I transfered the equation on the right to the left making 200(h) - 5h + 190 = 0. Combining like terms, I got 195h + 190 = 0. Getting the value of h, I used 195h = - 190 and divided both sides to 195 having the answer of h = - 0.974358974.

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

Question 655693: where does the graph f(x)=4x +3 intersect the y axis?
Click here to see answer by Alan3354(69443) About Me 

Question 655873: What is the inverse of the equation y = 3/2x
Click here to see answer by stanbon(75887) About Me 

Question 656132: If a belt goes around two pulleys, the number of revolutions per minute of each pulley is inversely proportional to its radius. What is the speed of revolutions of an 8-inch wheel if a 5-inch wheel is spinning at 120 RPM
?

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Question 656187: what is the domain and range of the function y=x^2+14x

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Question 656187: what is the domain and range of the function y=x^2+14x

Click here to see answer by lynnlo(4176) About Me 
Question 656187: what is the domain and range of the function y=x^2+14x

Click here to see answer by MathLover1(20849) About Me 

Question 656181: THE WIDTH OF THE COURT WAS 44FT LESS THAN THE LENGTH. IF THE PERIMETER WAS 288FT, WHAT WERE THE LENGTH AND WIDTH OF THE BASKETBALL COURT?
Click here to see answer by solver91311(24713) About Me 

Question 656244: If f(x) = 8x^3 + 5x^2 - x + C and f(-3) = 1, what is the value of C?

Click here to see answer by jim_thompson5910(35256) About Me 
Question 656244: If f(x) = 8x^3 + 5x^2 - x + C and f(-3) = 1, what is the value of C?

Click here to see answer by josmiceli(19441) About Me 

Question 656262: Determine whether the equation defines y as a function of x

sqroot(x) + y = 12

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Question 656531: 1/4y+3=-5x
Click here to see answer by stanbon(75887) About Me 

Question 656723: find f(m-2) if f(x)=5/x+2
Click here to see answer by lynnlo(4176) About Me 
Question 656723: find f(m-2) if f(x)=5/x+2
Click here to see answer by MathLover1(20849) About Me 

Question 656729: have you seen people adding chlorine to their pools? this is done to reduce the number of bacteria present in the water. uppose that after t days, the number of bacteria per cubic centimetre is given by the expression B = 20t^2 - 120t + 200. in how many days will the number of bacteria be at its lowest?
Click here to see answer by ewatrrr(24785) About Me 

Question 656751: How do you determine if y is a function of x in: y^2=7x
Click here to see answer by Edwin McCravy(20054) About Me 
Question 656751: How do you determine if y is a function of x in: y^2=7x
Click here to see answer by MathLover1(20849) About Me 

Question 656792: f(x)=x^2+2
what is domain

Click here to see answer by solver91311(24713) About Me 

Question 656938: Question I am being asked on homework:
"Use the graph to determine the function's domain and range"
This is the graph image link - https://angel.spcollege.edu/AngelUploads/QuestionData/3bded7bc-3ebb-4c1d-8fba-0589aaba418d/63532553425643DB3444.jpg

--- I'm Confused on how to determine the domain and range? I get
domain: [0, 8]
range: (-oo, oo)

Click here to see answer by solver91311(24713) 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