Questions on Algebra: Rational Functions, analyzing and graphing answered by real tutors!

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Question 75969This question is from textbook College Algebra
: this is on pg 386 #14
if f(x)= -2x+7, find the inverse of f
i'm not sure how to do thisThis question is from textbook College Algebra

Click here to see answer by 303795(562)

Question 79973: Identify the vertical asymptotes. please pick a right chioce
f(x)=x^2+1/x-2
a.x=1
b.y=1
c.x=2
d.y=2
Click here to see answer by Edwin McCravy(2922)

Question 79972: Identify the vertical asymptotes. please pick a right chioce
f(x)=x^2+1/x-2
a.x=1
b.y=1
c.x=2
d.y=2
Click here to see answer by rapaljer(3622)

Question 79979: Is the relationship between the varibles in the table a direct variation, an in verse or neither? If it is a direct inverse write a function to model it.
X= -2 3 5 6
Y= -11 4 13 32
Click here to see answer by Edwin McCravy(2922)

Question 79880: please help me out with this i need to turn this in soon possible and also this will help me in the rest homework to. thank u
1. Hydrodynamics is the branch of physics that studies the behavior of liquids that are in motion. For example, The Principal of Continuity in Liquid Flow states that the velocity of a liquid flowing through a pipe increases as the cross-sectional area of the pipe decreases, and decreases as the cross sectional area of the pipe increases.

On a given day, a fire department uses the same pump to put out two fires. The rate of water is given by the rational function:
f = 1250/A
where r is the rate of water in gallons per minute, and A is the cross sectional area of the hose in square inces. Does the function obey the Principal of Continuity in Liquid Flow?
2. During the morning fire, the fire department used a hose with a cross sectional area of 5 square inches. What was the velocity of the water?
3. During the evening fire, the velocity of the water was 100 gallons per minute. What was the cross sectional area of the hose?
Click here to see answer by vertciel(183)

Question 74811This question is from textbook Algebra I
:
solve the inequality

3(3y+1)<13y-8This question is from textbook Algebra I

Click here to see answer by vertciel(183)

Question 79970: Identify the horizontal asymptotes. please pick a right chioce
f(x)=x^2+1/x-2
a.x=1
b.y=1
c.x=2
d.y=2
Click here to see answer by stanbon(26291)

Question 80048: How do you graph x+y= -2 and 3x-y=10 after you use the graphical method
Click here to see answer by checkley75(3666)

Question 80052: For each of the following sketch the asympyotes and graph the function

Y=( 5 divided by x-3)+1

Y= (-4x+1 divided by -x-3)
Click here to see answer by stanbon(26291)

Question 80052: For each of the following sketch the asympyotes and graph the function

Y=( 5 divided by x-3)+1

Y= (-4x+1 divided by -x-3)
Click here to see answer by checkley75(3666)

Question 79968: Identify the vertical asymptotes. please pick a right choice
f(x)=x-1/x-3
a. x=3
b. y=3
c. x=1
d. y=1
f. none

Click here to see answer by stanbon(26291)

Question 80054: Is the relationship between te varibables in the table a direct variation an inverse or neither? if it is a direct or inverse write a functon to model it.
x= -9 -5 0 3
Y= -3 (-5/3) 0 1
(-5/3) is a fraction

Click here to see answer by stanbon(26291)

Question 80060: 2x + a d -------- + --- a + b x Thank you very much, Barbara

Click here to see answer by Edwin McCravy(2922)

Question 80081: In the equation:
y=2/x
x and y vary directly.
True
False

Click here to see answer by bucky(1732)

Question 80056: Find any points of discontinuity for rational function.
Y= (x-1)(x-9)(x+6) divided by(x+8) (x-3)

Click here to see answer by 303795(562)

Question 80080: 1. Hydrodynamics is the branch of physics that studies the behavior of liquids that are in motion. For example, The Principal of Continuity in Liquid Flow states that the velocity of a liquid flowing through a pipe increases as the cross-sectional area of the pipe decreases, and decreases as the cross sectional area of the pipe increases.
On a given day, a fire department uses the same pump to put out two fires. The rate of water is given by the rational function:
r = 1250/A
where r is the rate of water in gallons per minute, and A is the cross sectional area of the hose in square inches. Does the function obey the Principle of Continuity in Liquid Flow?
2. During the morning fire, the fire department used a hose with a cross sectional area of 5 square inches. What was the velocity of the water?
3. During the evening fire, the velocity of the water was 100 gallons per minute. What was the cross sectional area of the hose?
Click here to see answer by bucky(1732)

Question 80079: please help me out with this i need to turn this in soon possible and also this will help me in the rest homework to. thank u
1. Hydrodynamics is the branch of physics that studies the behavior of liquids that are in motion. For example, The Principal of Continuity in Liquid Flow states that the velocity of a liquid flowing through a pipe increases as the cross-sectional area of the pipe decreases, and decreases as the cross sectional area of the pipe increases.
On a given day, a fire department uses the same pump to put out two fires. The rate of water is given by the rational function:
f = 1250/A
where r is the rate of water in gallons per minute, and A is the cross sectional area of the hose in square inces. Does the function obey the Principal of Continuity in Liquid Flow?
2. During the morning fire, the fire department used a hose with a cross sectional area of 5 square inches. What was the velocity of the water?
3. During the evening fire, the velocity of the water was 100 gallons per minute. What was the cross sectional area of the hose?
Click here to see answer by tutorcecilia(2042)

Question 79966: Identify the horizontal asymptotes please pick a right choice
f(x)=x-1/x-3
a. x=3
b. y=3
c. x=1
d. y=1
f. none

Click here to see answer by stanbon(26291)

Question 80134: Please help me solve this equation?
Click here to see answer by ankor@dixie-net.com(6693)

Question 80144: Perform the indicated operations and simplify.
Leave answers as fractions, a/b, in simplified form

Click here to see answer by sofiyacherni(99)

Question 80143: Perform the indicated operations and simplify.
Leave answers as fractions, a/b, in simplified form
(5t^2/8)/(15t^2/12)
Click here to see answer by sofiyacherni(99)

Question 80107This question is from textbook

: The problem is 9 over the sq. root of 5 the the sq. root of 2. I have worked the first part but don't know what to do next. Can you help?This question is from textbook

Click here to see answer by ankor@dixie-net.com(6693)

Question 80246: i would really be thank u if u could help me out with this. thank so much

Identify the horizontal asymptotes.
f(x)=x-1/x-3

x=3
y=3
x=1
y=1
none

Question 2
Identify the vertical asymptotes.
f(x)=x-1/x-3

x=3
y=3
x=1
y=1
none

Question 3
Identify the horizontal asymptotes.
f(x)=x^2+1/x-2
x=1
y=1
x=2
y=2
none

Question 4
Identify the vertical asymptotes.
f(x)=x^2+1/x-2

x=1
y=1
x=2
y=2
none

Question 5 2 points
In the equation:
y=3x
x and y vary directly.
True
False

Question 6 Save
In the equation:
xy=0.1
x and y vary directly.
True
False

Question 7
In the equation:
y=2/x
x and y vary directly.
True
False

Question 8
If z varies jointly with the product of x and y, find the constant of variation, k, given x=1/2, y=8, z=12.
Enter only the numerical value of k.

Question 9
Using the information in question #8,
"If z varies jointly with the product of x and y, find the constant of variation, k, given x=1/2, y=8, z=12."
Write an equation that relates the variables.
Do not put any spaces between the numbers or variables in your equation.

Click here to see answer by stanbon(26291)

Question 80109: maximum profit a chain store manager has been told by the main office that the daily profit P is related to the number of clerks working that day, x, according to the equation p=-25x^2+300x. what number of clerks will maxamize the profit, and what is the maximum possible profit?
are they wanting us to solve as a equation i am confused please give me step by step instructions so I can complete the rest of my problems am freaking out
Click here to see answer by ankor@dixie-net.com(6693)

Question 80050: how do you graph x+y=-2 and 3x-y=10 using the graphical method
Click here to see answer by ankor@dixie-net.com(6693)

Question 80314: Two cars leave at noon from the same point, one traveling east at 50 mph, the other traveling due north at 60 mph.
(a) How far apart are they at 1 PM? at 1:30 PM?
(b) If t is the number of hours after noon, find an equation expressing the distance between the cars as a function of t.
Click here to see answer by checkley75(3666)

Question 80362: Hi, I need help with this. Can anyone lend a hand? Here it is:
If the expression: - 8w-5 over 6w+5 is to make sense, the values that w can take must be restricted. State the restriction on w.
I'm not too sure how to type it but it looks something like this:
8w-5
- ----
6w+5
Thank you so much for any help!!
Click here to see answer by stanbon(26291)

Question 80379: Please help with this problem if you can:
Given f(x)=2x^2-x+3, determine:
a) f(h)
b) f(x+2)
Thanks so much!!!
Click here to see answer by tutor_paul(424)

Question 80402: please help me out with this thank u
Identify the horizontal asymptotes, if any, of the function.
f(x)=1/(x-5)

x = 0
y = 0
x = -5
y = -5
none

Question 2
Identify the vertical asymptotes, if any, of the function.
f(x)=1/(x-5)
x = 0
y = 0
x = -5
y = -5
none

Question 3
The variable z varies jointly with the product of x and y. Use the given values to find an equation that relates the variables, given x=1, y=1/6, z=3.

Question 4
Perform the indicated operation and simplify.
(4x^2-4x/x^2+2x-3)/(4x./x^2+x-6)

Question 5
Perform the indicated operation and simplify.
(4x+1/x^2-4)-(3/x-2)

Question 6
Perform the indicated operation and simplify.
(5/x+1)+(x-7/x-2)

Click here to see answer by stanbon(26291)

Question 80562: plaese help me out with is thank u
The following equation is a circle.
y=x^2-6x+1
True
False

Question 4
The following equation is a circle.
12x^2+12y^2=36

True
False

Question 5 6 points Save
What is the center of the following circle?
Enter your answer as an ordered pair with no spaces.
(x,y)
x^2+y^2-4x+8y-3=0

Question 6
Which way does the following parabola open?
x=-4y^2+8y-2
up
down
left
right

Question 7
What is the vertex of the following parabola?
Enter your answer as an ordered pair with no spaces.
(x,y)
x=-4y^2+8y-2

Question 8
What is the focus of the following parabola?
x=-4y^2+8-2
Question 9
What is the equation of the directrix of the following parabola?
x=-4y^2+8y-2

Click here to see answer by stanbon(26291)

Question 80090This question is from textbook Algebra 2
: I need help understanding step functions, constant functions and identity functions. Here are some problems from Chapter 2 lesson 6 that I need help with.
6. f(x)=-[[x]]
Find the domain and range and graph.

10. g(x)={-1 if x<0
-x+2 if x>or=0 } Find the domain and range and graph.This question is from textbook Algebra 2

Click here to see answer by stanbon(26291)

Question 80694: The maximum number of vertical asymptotes a rational function can have is infinite.
True
False

Click here to see answer by stanbon(26291)

Question 80695: Solve.
Enter answer as x=a or x=a,b with no spaces. If there is no solution, enter the words no solution
(2x+14)/(x+4)-2=(2x+20)/(2x+8)
Click here to see answer by ssonygill(12)

Question 81213: I am trying to find the vertical asympote, the horizontal asympote and the x intercept for this problem: Then I have to graph it. Can somebody please help me?
Click here to see answer by Edwin McCravy(2922)

Question 81256This question is from textbook
: 4(squareroot x)-1=3This question is from textbook

Click here to see answer by tutor_paul(424)

Question 81400This question is from textbook College Algebra Graphs and Models
: I am having problems with writing a function for a word problem in college algebra. The word problem is as follows:
You want to enclose a rectagle for your dog. You have 84 feet of fencing. If the fence is x feet long, express the area as a function of the legnth.
Thank youThis question is from textbook College Algebra Graphs and Models

Click here to see answer by SMM52091(3)

Question 81471: i have problems with Direct Variation, im suppose to write an equation. Here is an example:
The total cost T varies with directly with the number of kilograms A of apples purchase. Apple cost $1.52per kilogram.
Click here to see answer by stanbon(26291)

Question 81529: x+( 8/x )=6
Click here to see answer by doctor_who(15)

Question 81576: find the vertex and intercepts for each parabola
h(x)=-3x^2+6x
please give step by step
Click here to see answer by tutorcecilia(2042)

Question 81617This question is from textbook california algebra 1 concepts and skills
: i am having a difficult time absorbing the concept of solving these problems. please help i'm trying to utilize all resources.
thank you
k. warrenThis question is from textbook california algebra 1 concepts and skills

Click here to see answer by rapaljer(3622)

Question 81616: the graphof y=sqrt(x^3x) contains which point
A.) 3, 24
B.)0, 1
C.)1, 1
D.)4, 2squrt(15)
E,)2, 6
F,) none of the above
Click here to see answer by rapaljer(3622)

Question 81833: barn painting
melanie can paint a certain barn by herself in x days her helper melissa can paint the same barn by herself in 2x days writeeeee a rational expression for the fraction of the barn that they complete in one day by working together. Evaluate the expreession for x=5
I realluy struggle with these word problem
Click here to see answer by stanbon(26291)

Question 81834: find the exact solution if the solution is irrational then also fineeeeee approxiate solutions to the nearest tenth
find two positive real numbers that differ by 2 and have the product of ten
Click here to see answer by stanbon(26291)

Question 81824: Make up a rational function that has the following characteristics: crosses the x-axis at 3; touches the x-axis at -2; has a vertical asymptote at x= 1 and at x= -4; has a hole at x=5; has a horizontal asymptote at y= 2.
Please do try to help me! If you can't figure out the whole thing, then it would be a HUGE help in itself if you could tell me what "touches the x-axis at -2" means. What is the difference between that and crossing the x-axis?
Click here to see answer by stanbon(26291)

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