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

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Question 235000: Give an example of a rational function that is undefined at x = a where a is a real
number. Next, state the domain of your rational function using both set notation and interval notation
Click here to see answer by solver91311(24713)

Question 235001: FORMULA:
f(x+h)-f(x)
___________
h

f(x)=5/x

a) Find f (x + h)
b) Find f (x)
c) Substitute f (x + h) and f (x) into the difference quotient formula
d) Simplify.
If the simplified result can be written as A/B
where A and B are expressions, what is A and
what is B?
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Question 235050: given the function f described by f(x)=10y squared+9y-6 find the function values.
f(-2)=?
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Question 235230: you join an aerobics class at a local gym. the cost is $3 per class plus $10 for the initial membership fee.
write an equation that shows the relationship between the number of classes n you attend and the amount you pay p.
i am in 8th grade and do not understand how to do this problem and my mom is smart and usually helps me but even she is stumped on this one. i hope you can help. thank you in advance for your help.
Click here to see answer by monika_p(71)

Question 235240: given R(x)=3x2-2x+4, evaluate R(-2)
Click here to see answer by jim_thompson5910(35256)

Question 235329: Find the domain of the function.
p(x)=x squared - 2x + 9
What is the domain of p?
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Question 235543: 2x+5=180
Click here to see answer by Jeff Gordon(65)

Question 235784: 3x+2y=12
Click here to see answer by nyc_function(2741)

Question 235781: f (x) = x^2 - 4x - 1
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Question 235766: given the function g(v)=3v+4, find g(5), g(-7), and g(6.7).
find the slope of (5,3) and (8,-6)
what is the domain of g(x)=10
---
3-7x
find the indicated outputs for f(x)=5x 2squared -5x
f(0)=
f(-1)=
f(2)=
Click here to see answer by nyc_function(2741)

Question 235932: find the domain of the function
p(x)=x^ - 2x +10
x^ means x squared, I hope I put that in right
thank you for your help, can wait to see the steps to this
Click here to see answer by jim_thompson5910(35256)

Question 235802: Which of the following are functions?
a. f(x) = x + 4
b. f(x) = 3 if x>2 otherwise f(x) = -2
c. f(x) = 7 if x>0 or f(x) = -7 if x<0 or f(x) = 7 or -7 if x = 0
I believe A is a function but that B and C are not, but I am not sure. How do I tell?
Click here to see answer by jim_thompson5910(35256)

Question 235943: for the function f and g, find fog and gof and state their domains. g(x)=x+2
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Question 235971: What is the domain and range of {(-4,3),(-2,-1),(0,0),(1,4),(2,6)}
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Question 236883: determine whether y to be a function of x
the abosulte value of y equals x
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Question 237049: (0,5),m=-2
write the equation in standard form of the line that passes through the given point and has a slope of M or that passes throught the two given points
Click here to see answer by rfer(16322)

Question 237368: I had a question in my exam today and i couldnt answer it fully
can you please help
Qeustion)a)
find the set of values of 'k' for which the equation 'f(x)=0' has no real solutions.
answer)
f(x)=x^2-kx+9, where k is a constant
b^2-4ac<0
k^2-4*1*9=k^2-36<0
k^2<36
k<6
-6 (-6,6)
that was fairly simple, however i struggled on the next part
Question)b)
Given that k=4,
express f(x) in the form (x-p)^2+q, where p and q are constants to be found.
answer)
Please help with this question because i really was angry when i couldnt complete it in my exam
thank you for your cooporation.
by the way i used '^' to show power of

Click here to see answer by jim_thompson5910(35256)

Question 237404: How would you determine two functions f and g such that h(x)= f(g) with a domain of (x)?
h(x)= (x-2)to the 4th power
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Question 237431: how can you find the function rule for
-2 12
1 9
4 6
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Question 237546: Given the range {-24, 0, 20}, what is the domain for the relation y = 4x - 4?
Click here to see answer by jim_thompson5910(35256)

Question 237611: long divison
p(x)=x^3+3x^2-10x-24 divided by x-3
Click here to see answer by stanbon(75887)

Question 237611: long divison
p(x)=x^3+3x^2-10x-24 divided by x-3
Click here to see answer by nyc_function(2741)

Question 237611: long divison
p(x)=x^3+3x^2-10x-24 divided by x-3
Click here to see answer by Theo(13342)

Question 237788: what does x equal for 4-(x+1)=8?
Click here to see answer by College Student(505)

Question 237848: write a polynomial function in standard form with the given zeros

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Question 237907: How would you find f(3) if f(x)=3x+7?
I missed this day in algebra and I am having a difficult time understanding this, for my textbook is very unexplanatory.
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Question 238108: Rewrite equation 4x-10y equals 11 as a function of x?
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Question 238207: Find the domain and range of the inverse of the function f(x)= 7 + 3e^x. I found the inverse to be y =ln(x-7)/3. I do not know how to find the domain and range of the equation. I know that the range of the original function is the domain of the invrse function, but that is it.
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Question 238247: find domain for function h
h(x) =15/x^2+6x+5
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Question 238257: subtract
21/17x - 5/17x
Click here to see answer by checkley77(12844)

Question 238257: subtract
21/17x - 5/17x
Click here to see answer by College Student(505)

Question 238355: In 2002, the price of mailing a letter was $.34 for the first ounce and $.21 for each ounce after the first ounce. Write a rule to describe the function.
Click here to see answer by stanbon(75887)

Question 238422: -15/13 divided by -10/11 =
Click here to see answer by Fombitz(32388)

Question 238401: what is the domain of y = -4x?
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Question 238508: find the domain of each rational function
f(x)= 7x
____________
x^2+16
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Question 238636: Can you explain why y=x^2 is the graph of a function of x, while x=y^2 is not the graph of a function of x?
Click here to see answer by josmiceli(19441)

Question 238585: how do you do this problem?
g(2x)+1
Click here to see answer by Alan3354(69443)

Question 238695: Lim Sin (1/x)
X-0
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Question 238764: how do u solve 4(a)= 3a*3a-2
Click here to see answer by checkley77(12844)

Question 238767: I am having trouble with this question:
Find the domain of the function
g(x) = 8/3-5x
the / is supposed to under the 8 and the 3-5x is under the /
Any help would be appreciated. Thank you in advance for helping me with this problem.
Click here to see answer by JimboP1977(311)

Question 238817: rewrite 6y-6x=15 so that y is a function of x
6y=15+6x
y=5/2+x
Click here to see answer by penguin1(1)

Question 238252: simplify
m^2-16m / 16-m
Click here to see answer by College Student(505)

Question 239140: please help me solve this equation
The function, f(x)=2x^3-3x, is
a.even
b.odd
c.neither even nor odd
d.none of the above
Click here to see answer by jsmallt9(3758)

Question 239188: 20x^11 divided by 30x^7
30y^8 30y^4

Click here to see answer by checkley77(12844)

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