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

Tutors Answer Your Questions about Functions (FREE)

Question 623752: Solve by factoring and check the factor, x^2+1=-2x please help I don't know what to do! Thank you!
Click here to see answer by solver91311(16868)

Question 623758: Determine the range of the function f(x) = (8 x + 3)(x − 5)
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Question 623835: For the function

find
Click here to see answer by edjones(7569)

Question 623937: What is the domain and range of y = x+2/2x+1 ?
the answer must be in {x/x blah blah} form - don't know the name XD
Click here to see answer by Theo(3458)

Question 623942: What is the domain and range of y = 3/10-2x ?
the answer must be in {x/x blah blah} form - don't know the name XD
please provide solutions~
Click here to see answer by solver91311(16868)

Question 623940: What is the domain and range of y = 2x/5 ?
the answer must be in {x/x blah blah} form - don't know the name XD
please provide solutions~
Click here to see answer by solver91311(16868)

Question 623939: What is the domain and range of y = 3/10-2x ?
the answer must be in {x/x blah blah} form - don't know the name XD
please provide solutions~
Click here to see answer by solver91311(16868)

Question 623936: hi! what is the domain and range of y= 2/3x-2 ?
the answer in { x/x blah blah } form.
Click here to see answer by solver91311(16868)

Question 624582: relation of 0,3 1,5 2,11 3,21
Click here to see answer by oscargut(891)

Question 624648: Evaluate the indicated function, where
f(x) = x2 − 3x + 2 and g(x) = 9x − 9.

(f − g)(−8)= ?
Click here to see answer by nerdybill(6948)

Question 624715: f(x) = x + 2 and asked to evaluate for f(-2) and f(0)
Click here to see answer by jim_thompson5910(28476)

Question 624918: suppose that the revenue R, in dollars, from selling x clocks is R(x)=30x. The cost C, in dollars, of selling x clocks is C(x)=0.1x^2+7x+400. Find the profit function.
Click here to see answer by prateekagrawal(56)

Question 624931: f(x)=x+2/x-6 i
is the point on (3,14)on the graph of f
Click here to see answer by jim_thompson5910(28476)

Question 624932: Hello. I have to find the f[g(x)] for the functions f(x)=4x+9;g(x)=-5x+7. could you please send me the step by step solution so I can learn it the right way. thank you and have a good day
Click here to see answer by jsmallt9(3296)

Question 624997: Find functions f and g so that h(x)=f(g(x)). The function g must be a polynomial or rational function.
h(x)= 3√x^2-3
(The three is on top of the √).
Thanks guys :D.
Click here to see answer by richard1234(5390)

Question 624993: Find functions f and g so that h(x)=f(g(x)). The function g must be a polynomial or rational function.
h(x)= ln(2x+5)
Thanks in advance to anyone who helps, I really appreciate it!
Click here to see answer by jsmallt9(3296)

Question 625106: Let f(x) = x2 + 3x – 4 and g(x) = x + 5. Find f(x) • g(x).
Click here to see answer by oscargut(891)

Question 625141: One zero of the function is -4, find the others.
f(x)=x^3-2x^2-11x+52
Click here to see answer by oscargut(891)

Question 625305: find the inverse and check.
h(x)= 1/3 x + 1
h(x)= 7/8x-2
d(x)= 5x+7/2x+4
Click here to see answer by jankiz(13)

Question 625379: what is the approximate area of an ellipse that is 150 feet long and 25 feet wide, Use the formula A=nab.
Click here to see answer by Alan3354(30955)

Question 625376: what is the domain of x^2+y^2=64
Click here to see answer by reynard2007(52)

Question 625151: One zero of the function is i. Find the others.
f(x)=x^4-4x^3+2x^2-4x+1
Click here to see answer by jsmallt9(3296)

Question 625434: how do i form a polynomial whose zeros are -4,4,1 and degree is 3?
Click here to see answer by Alan3354(30955)

Question 625473: Please help me find the Domain and Range of the function: y=x^2-9
Thank you
Click here to see answer by oscargut(891)

Question 625577: If h(x)= x^2-4xy+y^2/(x+2)(y-3), find f(-1,2)
Click here to see answer by oscargut(891)

Question 625878: what is the answer to 3/5 - 7/2
Click here to see answer by Maths68(1474)

Question 625878: what is the answer to 3/5 - 7/2
Click here to see answer by lenny460(753)

Question 626193: (2,1)(22,-5),(37,1),(2,7),(56,7) what is the domain
Click here to see answer by jim_thompson5910(28476)

Question 626326: Let f(x)=ax+b, where a and b are positive numbers, and assume that the following equation holds for all values of x: f(f(x))=bx+a. Find a+b.
Click here to see answer by Edwin McCravy(8879)

Question 626402: what is the y intercept of x-2y=0
Click here to see answer by jeanevyazuelo(1)

Question 626402: what is the y intercept of x-2y=0
Click here to see answer by solver91311(16868)

Question 626402: what is the y intercept of x-2y=0
Click here to see answer by lenny460(753)

Question 626519: what is the functional value requested in the problem:

F(x)=x^2-t^2

a.) F(t)=
b.) F(5t)=
Click here to see answer by jim_thompson5910(28476)

Question 626692: in how many ways can 10 runners finish first, second, or third ?
Click here to see answer by jim_thompson5910(28476)

Question 626695: What is the probability of drawing all red cards from a standard deck of 52 cards if you draw 5 cards from the deck? (Think combinations.)
A) .0253
B) .253
C) .50
D) .523
E) .875
Click here to see answer by stanbon(57214)

Question 626830: Evaluate the function, f(x)=5x+2. Find f(-1/2)
Click here to see answer by jim_thompson5910(28476)

Question 627000: find the domain of f(x)= (log(x-1))/ (sqrt(6-3x))
Click here to see answer by solver91311(16868)

Question 627199: I can't tell if this question is trying to try me or what.

True/False the table below does not define a function
______________
Domain Range
____________
1 -1
2 1
3 1
4 0

Click here to see answer by jim_thompson5910(28476)

Question 627224: what does the function exists and doesnot exist mean
Click here to see answer by solver91311(16868)

Question 627313: for the piecewise function find the values g(0),g(2), and g(7)
link to question image:http://oi48.tinypic.com/6jf5sm.jpg
i really need help on this i have no idea how to do this and i dont have access to a calculator yet with graphing just hoping im allowed to ask more then 5 questions when i start my test this is HW online so its unlimited i need help on
Click here to see answer by jim_thompson5910(28476)

Question 627404: if f(x) = 3x + 7 find f(3b) + 7 and simplify
Click here to see answer by jim_thompson5910(28476)

Question 627497: Let and G(x)=8-x
Find (F/G)(-1)= ?

Click here to see answer by reviewermath(500)

Question 627493: Can you help jog my memory by showing steps to solving the following functions?:
Given f(x) = {(2,3),(3,7),(-1,5),(0,-1)
State the domain of f(x)
State the range of f(x)
Find f(3)+f(-1)
Click here to see answer by ewatrrr(10682)

Question 627625: Which of the following could be modeled by y=2x+5? Answer YES or NO for each one.
a. There are initially 5 rabbits on the farm. Each month thereafter the number of rabbits is 2 times
the number in the month before. How many rabbits are there after x months? YES NO
b. Joaquin earns $2.00 for each magazine sale. Each time he sells a magazine he also gets a five- dollar tip. How much money will he earn after selling x magazines?
YES NO
c. Sandy charges $2.00 an hour for babysitting. Parents are charged $5.00 if they arrive home later than scheduled. Assuming the parents arrived late, how much money does she earn for x hours?
YES NO
d. I have a sequence of integers. The first term of the sequence is 7 and the difference between any consecutive terms is always equal to 2.
YES NO
e. Sneak Preview is a members-only video rental store. There is a $2.00 initiation fee and a $5.00 per video rental fee. How much would John owe on his first visit if he becomes a member and rents x videos?
YES NO
f. Andy is saving money for a new CD player. He began saving with a $5.00 gift and will continue to save $2.00 each week. How much money will he have saved at the end of x weeks?
YES NO
Click here to see answer by solver91311(16868)

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