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

Algebra ->  Functions -> Questions on Algebra: Functions, Domain, NOT graphing answered by real tutors!      Log On


   



Tutors Answer Your Questions about Functions (FREE)


Question 1042867: Suppose the functions g, h, l are defined as follows:
g(x) = 1/2x -3
h(x) = +sqrt%28%282-x%29%29%5E2%2B1%2F2+x+
l(x) = 2 - x - 3
1.1 Write down Dg and solve the equation 4^g(x) = 8
1.2 Write down Dg+h and solve the equation g(x) + h(x) = 0
1.3 Write down Dg.l without first calculating g(x).h(x) = 0
1.4 Write down Dl/g without first calculating l(x)/ g(x)
Thanks for your help...

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

Question 1043038: Find v(w + 3) for v(w) = 2w - 1
Click here to see answer by stanbon(75887) About Me 

Question 1043037: The amount of people in the city of Blonton is increasing due to children being born and because people are moving to the area.
•The population is increasing due to births by 13% each year and about 2300 people move to the area in any given year..
•The increase due to people moving to the area is represented by the function M(t) = 2300t..
•The population at any time when taking into account new births is found by P(t) = 375,000(1.013)t where 375000 was the initial population and t stands for the number of years after 1990..
If we added these functions together, what would the sum represent?

Click here to see answer by stanbon(75887) About Me 

Question 1043141: If two points on a line have (x,y) coordinates of (N,0), and (3,-4), and slope of the line is N, what is the value of N?
A) -2
B) -1
C) 1
D) 2

Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 1043190: Let $f(x) = x^4-3x^2 + 2$ and $g(x) = 2x^4 - 6x^2 + 2x -1$. Let $a$ be a constant. What is the largest possible
degree of $f(x) + a\cdot g(x)$?

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

Question 1043159: Find (f∘g)(x) and (g∘f)(x) using the given: $f(x)=3x-1,g(x)=4x^2$


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

Question 1043296: The graph of the function f in the xy-plane is a parabola that has a maximum at point(5,10).If the graph has one x-intercept at(1,0), what is the other x-intercept of f?
A) (-1,0)
B) (8,0)
C) (9,0)
D) (10,0)

Click here to see answer by stanbon(75887) About Me 

Question 1043372: http://i.imgur.com/VusTjrb.jpg
In the xy-plane above, line l and m are parallel and intersect the x-axis at x=a and x=b respectively. if a+b=8, what is the value of a ?

Click here to see answer by ikleyn(52794) About Me 

Question 1043371: http://i.imgur.com/8YwBL6H.jpg
The graph of g is shown in the xy-plane above. If f(x)=2g(x)-5. What is the average rate of change of f(x) between -2 and 4?

Click here to see answer by ikleyn(52794) About Me 

Question 1043405: http://i.imgur.com/vYsymOg.jpg%20for%20question
The graph of g is shown in the xy-plane above. If f(x)=2g(x)-5. What is the average rate of change of f(x) between -2 and 4?
A) 1/2
B) 1/3
C) -1/4
D) -1/3

Click here to see answer by robertb(5830) About Me 

Question 1043406: http://i.imgur.com/fA1v6fX.jpg
In the xy-plane above, line l and m are parallel and intersect the x-axis at x=a and x=b respectively. if a+b=8, what is the value of a ?
A) 1.5
B) 2
C) 2.5
D) 3

Click here to see answer by robertb(5830) About Me 

Question 1043440: if f:A to B where A,B⊂R . f(x)= (1-2x)/(x-5) is a FUNCTION. FIND IT'S INVERSE.
NB- i think it's not a function because input 5 will give no output .but the domain of the function doesn't say anything about 5. if A WOULD BE R-{5} THEN IT WOULD BE A FUNCTION. I AM NOT SURE About it. what does A⊂R INDICATE HERE.HENCE WILL INVERSE BE POSSIBLE ?

Click here to see answer by stanbon(75887) About Me 

Question 1043461: State the Domain and Range for f(x)= -2+x^5 and f(x)=-3/x+1
how do I do this?

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

Question 1043462: Find the vertical and horizontal asymptotes (if any) for y= 1/ x+2 + 4
Click here to see answer by ikleyn(52794) About Me 

Question 1043582: A particular breed of tilapia has its weight W in kg. related to its length L in cm. modeled by the function: W=(3.24 x 10^-3)L^2.
Explain why the function is one to one even if it is a quadratic function. Find the inverse of this function and approximate the length of a single fish if its weight is 400 grams.

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

Question 1043587: A store has an average of 5000 customers per week and sells chicken for $10 per chicken.The owner knows that for each $2 increase, the number of customers decrease by 12.What function rule describes the increased price per chicken?
Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 1043669: Given: F(x) = 5x^2-7x+3, g(x)= 4x+9
Find:
a.(f of g) (x)
b.(g of f) (x)

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

Question 1043709: ff-1(8)
Click here to see answer by Alan3354(69443) About Me 

Question 1043719: Explain how the graph of f(x+4) +2 compares with the graph of f(x).
Click here to see answer by stanbon(75887) About Me 

Question 1043727: f(x)=4x^2-3x+2
find the following function values.
A. f(4) B. f(-3) C. f(0)

Click here to see answer by tampham5396(3) About Me 

Question 1043729: Let C(x)=(1+x^2)^3. Find the functions f and g so that C(x)=(f o g)(x) is true for all values of x.
Click here to see answer by stanbon(75887) About Me 

Question 1043701: Why the function W=(3.24 x 10^-3)L^2 is a one to one even if it is a quadratic function?

Click here to see answer by ikleyn(52794) About Me 

Question 1043750: if f(x)=(x-1)/(x+1),then f^-1 (1/t)=?
Click here to see answer by stanbon(75887) About Me 

Question 1043755: What is the inverse of the function:
W=(3.24 x 10^-3) L^2

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

Question 1043700: What is the inverse of this function:
W=(3.24 x 10^-3) L^2

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

Question 1043751: what is the area enclosed by the graph of |x|/9 + |y|/4=1?
Click here to see answer by ikleyn(52794) About Me 

Question 1043838: I need help with this question:
a plane flies 440 miles with the wind and 330 in the same length of time If the speed of the wind is 21. what is the speed of the plane in still​ air?

Click here to see answer by Boreal(15235) About Me 

Question 1043863: find the equation of the line that has a slope of -3/5 and passes through (5,-3)
Click here to see answer by advanced_Learner(501) About Me 

Question 1043862: Please help. Thanks
The cost of developing pictures is a linear function of the number of pictures ordered. We placed two orders. The first order had 50 pictures and cost $3.75. The second order had 54 pictures and cost $3.95. Find the cost as a function of the number of pictures

Click here to see answer by advanced_Learner(501) About Me 

Question 1043866: "Pick any number. Add three to your number. Double your result. Add four to that number. Divide the result by 2. Finally subtract your original number. Your result is 5."
1. How does this work with any starting number?
2. Can you create your own "magic" equation?

Click here to see answer by ikleyn(52794) About Me 

Question 1043886: I need step by step help in solving this:
The Jurassic Zoo charges $6.00 for each adult admission and $2.00 for each child. The total bill for the 144 people from a school trip was $476. How many adults and how many children went to the zoo? 

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

Question 1043897: Please help:
One canned juice drink is 15% orange juice; another is 5% orange juice. How many liters of each should be mixed together in order to get 10L that is 77% orange juice?

Click here to see answer by ikleyn(52794) About Me 

Question 1043905: Please help:
One canned juice drink is 15% orange juice; another is 5% orange juice. How many liters of each should be mixed together in order to get 10L that is 7% orange juice?

Click here to see answer by jim_thompson5910(35256) About Me 
Question 1043905: Please help:
One canned juice drink is 15% orange juice; another is 5% orange juice. How many liters of each should be mixed together in order to get 10L that is 7% orange juice?

Click here to see answer by ikleyn(52794) About Me 

Question 1043938: Solve the system using the substitution method. If the system has no solution or an infinite number of solutions, state this.
x+y=7
6x+6y=42

Click here to see answer by Timnewman(323) About Me 
Question 1043938: Solve the system using the substitution method. If the system has no solution or an infinite number of solutions, state this.
x+y=7
6x+6y=42

Click here to see answer by ikleyn(52794) About Me 
Question 1043938: Solve the system using the substitution method. If the system has no solution or an infinite number of solutions, state this.
x+y=7
6x+6y=42

Click here to see answer by MathTherapy(10552) About Me 

Question 1043945: The owner of Nuts2U Snack Shack mixes cashews worth $5.50 a pound with peanuts worth $2.30 a pound to get a half-pound, mixed-nut bag worth $1.70. How much of each kind of nut is included in the mixed bag?

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

Question 1043947: The owner of Nuts2U Snack Shack mixes cashews worth $5.50 a pound with peanuts worth $2.30 a pound to get a half-pound, mixed-nut bag worth $1.70. How much of each kind of nut is included in the mixed bag?

I need step by step help on this please.

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

Question 1043979: There were 480 people at a play. The admission price was $2 for adults and $1 for children. The admission receipts were $800. How many adults and how many children attended?

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

Question 1044086: The length of a rectangle is 6 cm greater than the width. The area is 280 cm squared. Find the length and the width.
Click here to see answer by Timnewman(323) About Me 
Question 1044086: The length of a rectangle is 6 cm greater than the width. The area is 280 cm squared. Find the length and the width.
Click here to see answer by ikleyn(52794) About Me 

Question 1044096: If f%28x%29+=+5x and g%28x%29=2x%5E2-1
How would you set up:
%28fog%29%28x%29 Would it be: %28f%29%28x%29%2A%28g%29%28x%29+=+%285x%29%282x%5E2-1%29
%28gof%29%28x%29 Would it be %28g%29%28x%29%2A+%28f%29%28x%29=+2x%5E2-1+%2A+5x
g%5E-1%28x%29 ?
f%5E-1%28x%29 ?
I greatly appreciate all of your help and advice

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

Question 1044176: Answer the questions about the following function.

F(x)=x+12/x-4

​(a) Is the point(2,9) on the graph of​ f?
​(b) If x​ = 3 what is​ f(x)? What point is on the graph of​ f?
​(c) If​ f(x) =​ 2, what is​ x? What​ point(s) are on the graph of​ f?
​(d) What is the domain of​ f?
​(e) List the​ x-intercept(s), if​ any, of the graph of f.
​(f) List the​ y-intercept, if​ any, of the graph of f.

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

Question 1044185: Find the y-intercept of the function given by: F(x)+3=0.17x^2+(5-2x)^x-7
Thank you

Click here to see answer by Fombitz(32388) 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