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

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Question 1174551: If f(x)=f(x-2)+x, and f(7)=11, find f(5).
Click here to see answer by ikleyn(52776) About Me 

Question 1174550: A function is defined by f(0)=0 and f(n)=f(n-1)+2n, for n > 0. Find f(4).
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Question 1174549: If f(n+1)=2f(n)+1for every natural number n and f(1)=3, find f(11).

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Question 1174567: f(1) = x-f(
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Question 1174573: f(1) = x - f(f(x
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Question 1174585: Just a more teorical type of question!
I don't understand why 1/x is a function. When it is graphed, it is discontinuous. Has two areas separated by an asymptote.

Click here to see answer by math_helper(2461) About Me 

Question 1174607: Let: (f)x=x2+5x+6  (g)x=3x+7   (h)x=4x2
1. g∘h3
2. f∘g∘h0





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Question 1174606: Let: (f)x=x2+5x+6  (g)x=3x+7   (h)x=4x2
1. g∘hx
2. f∘hx
3. h∘g5



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Question 1174779: F(x)=2x then what is f(-3),f(-1) and f(4)

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

Question 1174857: Determine whether the equation defines y as a function of x.
x2 + y = 25

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Question 1174856: Determine whether the equation defines y as a function of x.
|x| - y = 6

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Question 1174854: Determine whether the equation defines y as a function of x.
x + y = 49

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Question 1174855: Determine whether the equation defines y as a function of x.
x + y3 = 1

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Question 1175068: The function P(x) = 0.65x - 57 models the relationship between the number of pretzels x that a certain vendor sells and the profit the vendor makes. Find
P(1000) the profit the vendor makes from selling 1000 pretzels.

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Question 1175069: The function P(X) = 0.65x - 57 models the relationship between the number of pretzels x that a certain vendor sells and the profit the vendor makes. Find
P(1000) the profit the vendor makes from selling 1000 pretzels.

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Question 1175070: The function P(100) = 0.65x - 57 models the relationship between the number of pretzels x that a certain vendor sells and the profit the vendor makes. Find
P(1000) the profit the vendor makes from selling 1000 pretzels.

Click here to see answer by josgarithmetic(39616) About Me 

Question 1175146: Determine whether the relation represents a function. If it is a​ function, state the domain and range.
{(-4,11), (-3,4), (0,-5), (3,4), (5,20)}
A. function
domain: {11, 4, -5, 20}
range: {-4, -3, 0, 3, 5}
B. function
domain: {-4, -3, 0, 3, 5}
range: {11, 4, -5, 20}
C. not a function

Click here to see answer by MathLover1(20849) About Me 
Question 1175146: Determine whether the relation represents a function. If it is a​ function, state the domain and range.
{(-4,11), (-3,4), (0,-5), (3,4), (5,20)}
A. function
domain: {11, 4, -5, 20}
range: {-4, -3, 0, 3, 5}
B. function
domain: {-4, -3, 0, 3, 5}
range: {11, 4, -5, 20}
C. not a function

Click here to see answer by MathTherapy(10551) About Me 

Question 1175265: Use the table below to find the indicated function values.
x | ​f(x)
-8| -3
-4| 0
0 | 3
4 | 6
8 | 9
a. f(-8) = ?
b. f(8) = ?
c. For what value of x is f(x)=3? x= ?

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

Question 1175283: Given the solutions 𝑥 = 3𝑖, 𝑥 = 1, and 𝑥 = 3/4 what are the factors?
Click here to see answer by ankor@dixie-net.com(22740) About Me 
Question 1175283: Given the solutions 𝑥 = 3𝑖, 𝑥 = 1, and 𝑥 = 3/4 what are the factors?
Click here to see answer by MathTherapy(10551) About Me 
Question 1175283: Given the solutions 𝑥 = 3𝑖, 𝑥 = 1, and 𝑥 = 3/4 what are the factors?
Click here to see answer by greenestamps(13198) About Me 

Question 1175340: The formula for an investment worth with interest compounded annually is A = P(1 + i)^n, where P represents the initial investment, i is the interest rate, and A is the worth of the investment after n years.


a) Solve the formula for P. What was the initial investment of an investment worth $1000 that compounded 10% interest for 10 years?
b) Solve the formula for i. What is the interest rate of an investment whose worth went from $1000 to $1200 in 2 years?
c) Explain a method with which you could estimate how many years it would take for an investment to reach a certain worth at a certain interest rate.
d) Estimate how many years would it take an investment of $2100 at 20% interest to reach a worth of $5225?

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

Question 1175360: Determine whether the given function is linear. If the function is linear, express the function in the form
f(x) = ax + b.
(If the function is not linear, enter NOT LINEAR.)
F(x)=5+ 1/5x
F(x)=

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Question 1175362: Consider the parent function f(x)= √x. What parameters (a, k, d, c) affect the domain of g(x)= af[k(x-d)] + c? Explain.
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Question 1175363: Give three reasons why the following graph is not continuous on the interval (0, 10).
link to graph: https://gyazo.com/f6f84ec569fbe0cfd54d3074c9035873

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Question 1175354: What is the range of the function given by the following graph?
link to graph: https://gyazo.com/8b2c0711459b5495245c6c5cd81d6d2e

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Question 1175361: The graph of y = x^2 is stretched vertically by a factor of 3, stretched horizontally by a factor of 5, and translated horizontally to the left by 12. Determine the equation that results from these transformations.
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Question 1175371: Differentiate (x+y)/(x-y) with respect to x.
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Question 1175419: Determine tje concavity of the parabola representing the quadratic function,its y intercept, its x intercepts if any Exist and the coordinate of the vertex sketch the parabola. f(x) = 2xsquare-13 x + 20
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Question 1175984: A. Given the domain {−2, , −1,0,1,2}, determine the set of all possible ordered pairs, and the range for each relation.
1. 𝑦 = 2𝑥 + 1
2. 𝑥 + 𝑦 = 6
3. 𝑦 = 2𝑥2
4. 𝑦 = |𝑥|
5. 𝑦 = 2𝑥−1
2
I really do need your help please

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Question 1176079: An international long distance phone plan has a $5.99 monthly fee plus $.59 per minute for all calls to Canada. Express the formula using the function notation C(m) as the monthly charge for m minutes of long distance calls to Canada.
The function is C(m)= ___
The charge for 95 minutes of long distance calls to Canada is C (95)= $___
The charge for 159 minutes of long distance calls to Canada is C (159) = $___

Click here to see answer by CubeyThePenguin(3113) About Me 

Question 1138323: The temperature of air in a room that began at 55°F is increasing by 8°F per hour. Write a function that
describes the temperature of the air over time.

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Question 1145906: what do you consider that a function is continuous.how to see if it exists
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Question 1170093: f(x)=((1)/(x)) -2 inverse

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Question 1165629: If f(x) = |x| + 9 and g(x) = - 6, which describes the value of (f + g)(x)?
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Question 1148080: For the function below neatly solve for x. Show all work.
𝑓(𝑥) = 6𝑥^3 + 25𝑥^2 − 24𝑥 + 5
Use the Rational Root Test to list all the potential rational zeros

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Question 1168244: The given function is f(x) = 2x^2 and g(x) = 3x+1
Find:
1.) f(x)^2
2.) f(x)^3-g(x)+g(x)^2

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Question 1166788: Elaine is paying $799 for an internet service with 3GB monthly data and a connection fee $20 per hour in excess of the data. Represent her monthly bill as a function of connection time.

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Question 1164602: Given f(x)= 2/x - 4 and g(x)= +sqrt+1%E2%88%92x2+ determine:
a) f(x+h)−f(x) / 4
(b)g(2−h)

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Question 1176155: Evaluate the piecewise function at the given value of the independent variable.
f(x)=
{3x+4 if x<-1
{ 2x-4 if x≥-1
;
f(3)

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Question 1166611: suppose the graph of f is given. describe how the graph of each function can be obtained from the graph of f. do not graph.
y = f(2x) - 1

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Question 1171425: A skyrocket is shot into the air. It's altitude h in feet/seconds is given by the function h = -16t^2 + 128t.
a. In how many seconds does the skyrocket reach its maximum altitude?
b. What is the skyrocket's maximum height?

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Question 1148103: g={(-6,-5),(2,-6),(8,-2),(9,8)}
h(x)=2x+13
Find the following
g^-1(-6)=
h^-1(x)=
(h°h^-1)(9)=

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Question 1176313: Suppose that the relation H is defined as follows.
H = {(2,2),(7,0),(6,-3),(-8,7)}
Give the domain and range of H.
Write your answers using set notation.
Domain=
Range=

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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