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

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 Algebra: Functions, Domain, NOT graphing Solvers Lessons Answers archive Quiz In Depth

 Question 149825: I have completely forgotten anything that has to do with finding the domain, the range, and if there a set of points is a function. Can you please help me by explaining it to me? Here is a set of points that I need to identify the domain, the range, and tell whether it is a function or not: {(2,3),(3,7),(5,-1),(0,0). Please, someone clarify this for me! Click here to see answer by vleith(2825)

 Question 150126: Do exponentail functions only model phenomena that grow, or can they also model phenomena that decay? Explain what is different i the form of the function in each case. Click here to see answer by Fombitz(13828)

 Question 150264: what is domain x^3 - X^2 - 2x +2/x^2-1 Click here to see answer by Fombitz(13828)

 Question 150381: If f(x)={(3,5), (2,4), (1,7)} and h(x)= {(3,2), (4,3), (1,6)} then what is f(h(4))? Click here to see answer by stanbon(57282)

 Question 150422: {(1,1),(1,-1),(2, -4), (3,9), (3,-9)is it a function and give the domain and range. Click here to see answer by smalltimegenius(2)

 Question 150451: I would like some help with this question, please: Given the function find the value of f(3). Thank you! Click here to see answer by jim_thompson5910(28536)

 Question 150578: f(x)=x^2-4x+3. what is the domain and range? determine if it is odd,even or neither. Click here to see answer by edjones(7569)

 Question 150755: What is the value of f(-3) for the function f(x)=4.7x+1.6? A. -18.3 B. -15.7 C. -12.5 D. 15.7 Click here to see answer by mangopeeler07(462)

 Question 150581: f(x)= x+1/3x-1 find the value of c if f(c)=c Click here to see answer by Fombitz(13828)

 Question 150813: I'm confused with this function problem. It states: For the function f(x) = x^2-2x+1 solve f(x) = 0. I'm confused about this question, please help me. Thank you. Click here to see answer by jim_thompson5910(28536)

 Question 150845: Kindly help me to solve the . These are the only given facts, ; . Click here to see answer by vleith(2825)

 Question 150839: f(x) = -3x^2 + x, x = -5 Click here to see answer by nerdybill(6951)

 Question 150803: OP = <6,5>, OQ = <13, −2>, u = i − 3j and v = 3i − 2j. If PQ = ku + hv where k and h are constant, find a)k and h Hint: PQ = PO + OQ). k & h already get answer k=1 & h=2.... b)Unit vector for PQ in terms of i and j?? Click here to see answer by Fombitz(13828)

 Question 150885: f(x)=3x+2 g(x)=x^2 find (g o f) (x) Click here to see answer by Fombitz(13828)

 Question 150910: Hello all I would like your help one more time. I've got most of what my teacher asked us to do but I am stuck on the following the task is to: Evaluate the functions for the values of x given as 1, 2, 4, 8, and 16. Describe the differences in the rate at which each function changes with increasing values of x. f(x) = x2 - 3x + 2 f(x) = 2x3 + 7x2 - x - 1 f(x) = 10x f(x) = ln x (I don't know if this is (one n x) or the letter (l)n x, whatever that means) Any help would be GREATLY appreciated!! Click here to see answer by jim_thompson5910(28536)

 Question 150968: f(x)= |3x-2| Click here to see answer by jim_thompson5910(28536)

 Question 151003: g(x)=square root 3-x a) domain and range of function b)sketch graph Click here to see answer by vleith(2825)

 Question 151012: Evaluate the functions for the values of x given as 1, 2, 4, 8, and 16. Describe the differences in the rate at which each funtion changes with increasing values of x. f(x) = 5x -3 Click here to see answer by mangopeeler07(462)

 Question 151002: f(x)=x squared 2 - 4x+3 a) find domain and range of th function b)determine if it is odd,even or neither. justify your answer. c) sketch graph Click here to see answer by Fombitz(13828)

 Question 151132: The lenght of Jim's leader is always 2 feet shorter than lenght of this fishing rod.If the product of the lenght of the leader and lenght of the rod equals the strenght of his line in pounds and he uses a 16 lb line,what is the lenght of his leader? Click here to see answer by stanbon(57282)

 Question 151134: 3t _____ s(t) = t + 2 Click here to see answer by stanbon(57282)

 Question 151133: Kay wants a rectangular area in greenhouse reserved for African violets.She says the widths of the area must be one foot less then the length she also tells me the area must be at least 12 square feet. What widths satisfy Kay's requirements? Click here to see answer by mducky2(62)

 Question 151162: Im stuck on this problem. Please help me by showing all the steps and equation. Thank You! 3. For the 2 functions, f (x) and g(x), tables of values are shown below. What is the value of g(f (3)) ? x f(x) x g(x) –5 7 –2 3 –2–5 1 –1 1 3 2 –3 3 2 3 –5 A. –5 B. –3 C. –1 D. 2 E. 7 Click here to see answer by vleith(2825)

 Question 151318: y-2-8 sqrt(y-2)+15=0 Click here to see answer by jim_thompson5910(28536)

 Question 151370: Which of the following are functions? Why? a. f(x)=2 if x>1 otherwise f(x)=-1 b. f(x)=5 if x>0 or f(x)=-5 if x<0 or f(x)=5 or -5 if x= 0 c. f(x)= x/10 Click here to see answer by oscargut(891)

 Question 151450: Take a look at the table below and write out an equation for f(x). x -2 -1 0 1 2 f(x) -5 -2 1 4 7 Click here to see answer by stanbon(57282)

 Question 151653: h(x)= -4x-20, for x<-7 1, for -7< or equal to x<1 x+2, for x> or equal to 1 h(-10), h(-1), h(1), h(2) h(-10)= h(-1)= h(1)= h(2)= Click here to see answer by jim_thompson5910(28536)

 Question 151659: IF f(4)=0 and f(6)=6, which of the following could represent f(x)? A. 2/3x-4 B. x+2 C. x-4 D. 3/2x+6 E. 3x-12 Now i no the answer is "E" because someone told me but they didn't explain it good enough so i was wandering if you could give it a try? Thank you! Click here to see answer by jim_thompson5910(28536)

 Question 151671: Can someone please help I don't understand. Find the equations for the horizontal and vertical asymptotes of the following. A. f(x)=2x+1/x-4 B. g(x)=3x/x^2-4 What is the horizontal vertical for both equations? Thank you Click here to see answer by jim_thompson5910(28536)

 Question 151704: I need the domain of the following problem: Please. College Algebra. If I can figure out the meaning of domain and see it being worked in a problem, I should be able to work it. Click here to see answer by jim_thompson5910(28536)

 Question 151708: This is another Domain question that I would like to have answered because it contains the square root and is different from the first one submitted. If I get my symbols right. Its the old division sign with a check on the beginning. You can tell I'm old school going back to school after 36 years.:-) Thank you for your help. Click here to see answer by jim_thompson5910(28536)

 Question 151758: 19z-70=50 how to do that step by step. Click here to see answer by jim_thompson5910(28536)

 Question 151838: f (x) = x2 − 4x +3 a)Find the domain and range of the function. b)Determine if it is odd, even or neither?Justify Your answer c)Skecth the graph Click here to see answer by nabla(475)

 Question 151861: Please write the function rule for the following table: Domain: 3.5, 4, 4.5, 5, 5.5, 6 Range: 35, 35.5, 36, 36.5, 37, 37.5 Click here to see answer by scott8148(6628)

 Question 151862: Describe and correct the input error in the following table. The output is correct: input,x: 1, 3, 1, -3 output,y: -1, 4, 1, 5 Click here to see answer by nerdybill(6951)

 Question 151896: I need to state the domain of the following. A) B) C) D) E) Please help. I am having trouble understanding this. Click here to see answer by Edwin McCravy(8893)

 Question 152047: A circus performer is juggling clubs while standing on stilts. He releases a club from a point 8ft above the ground with the initial vertical velocity of 10 ft per second. The vertical motion mode is h = -16t2(It's t to the second power) + vt + s where he is the height of an object in feet, t is the time seconds, v is the initial vertical velocity in feet per second, and s is the initial height in feet. a) Write an equation in function notation that models the height (in feet) of the club as a function of time (in seconds). b) Make a table of the time in the air and the heights of the club from 0.1 seconds to 1.5 seconds. c) Graph the function and label the vertex. d) How long after the club is released does the club reach its maximum height? What was the maximum height? e) How long after the club is released will it return to the ground? How do you know this? Thanks so much for your help!!!! Click here to see answer by vleith(2825)

 Question 152075: If f(x)=7x+2, determine f^-1(x) Does f^-1 just mean the opposite of f(x)? Click here to see answer by nabla(475)

 Question 152080: consider the function f(x) = X^2 - 6x + 2. Find h, the x-coordinate of the vertex of this parabola. Click here to see answer by scott8148(6628)

 Question 152188: I need help with the following function: Consider the following function: f(x): Find h, the x-coordinate of the vertex of the parabola. Thanks so much Click here to see answer by scott8148(6628)

 Question 152152: Find the domain of the following: g(x)=5^2 g(x)=1n(x-4) g(t)=log(t+2) f(t)=5.5e^t Click here to see answer by edjones(7569)

 Question 152277: f(x)= 1/ X-3 here it is given that X is not equal to -3 solution domain = set of all real no's except -3 range = set of all real no's except 0 << here i m confused from where did this zero come from.just this part. ------------- also like in this question f(x)= x-1/x-4 , given that x is not equal to 4 here doman is = set of real nos except 4 and range is set of all real nos except -1<< again from where did -1 come from. Click here to see answer by oscargut(891)

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