# 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 486971: Im in Pre-Calc. What is the domain of: h(x) = square root of (4-x) ALL OVER (x+1)(x squared+1) give answers like (-3, 1) U (1, infinity) - that is just an answer from a previous problem im having trouble with this current one because not much makes sense - thanks for the help Click here to see answer by jim_thompson5910(28476)
 Question 486971: Im in Pre-Calc. What is the domain of: h(x) = square root of (4-x) ALL OVER (x+1)(x squared+1) give answers like (-3, 1) U (1, infinity) - that is just an answer from a previous problem im having trouble with this current one because not much makes sense - thanks for the help Click here to see answer by MathLover1(6614)

 Question 487001: how would the graph equation y=2x-5 change if the value of the m remains the same and the value of b changes to 5 Click here to see answer by John10(245)

 Question 487591: how is this true 5+4+3+3+3+3+4+3+4=(-4)? you cannot change anything or add anything to make the problem true Click here to see answer by richard1234(5390)

 Question 487935: find the rule input: 1, 2, 3, 4 output: 2, 8, 14, 20 Click here to see answer by chessace(471)

 Question 489765: If I chose x from the set of all real numbers, is y = |x²| a function of x? If I chose y from the set of all real numbers, is |y| = x² a function of y? Click here to see answer by chessace(471)

 Question 490466: Let f(x)=4-5x^4. Find the domain and range of f(x). Click here to see answer by stanbon(57219)

 Question 490661: What is the domain f(x)=sqrt 2x-10? I believe its 5, but I'm having a hard time entering it into WeBWorK in interval notation. Click here to see answer by John10(245)

 Question 491154: how do i find the range and domain of (x-4)^3 ? Click here to see answer by jim_thompson5910(28476)
 Question 491154: how do i find the range and domain of (x-4)^3 ? Click here to see answer by MathLover1(6614)

 Question 491147: What is the domain and range of the absolute value function y=4|x-2|+1? Click here to see answer by stanbon(57219)

 Question 491163: This is my question.... The TM Tennis Team played a total of 162 matches last season. The number of matches the team lost, l, and the number of matches the team won, w, are represented by the formula below. What quantity does the dependent variable represent? Formula is... l=162-w Click here to see answer by jim_thompson5910(28476)

 Question 491263: If f(n) = n + √n, where n is a positive integer, which of the following would be a value of f(n) I) 5 II) 10 III) 12 Click here to see answer by richard1234(5390)

 Question 491513: find the range of: f(x)= 10 - x^2 Click here to see answer by stanbon(57219)

 Question 491847: Form a polynomial whose zeros and degree are given. Zeros: -2, -5, 5; degree Click here to see answer by stanbon(57219)

 Question 491908: Please explain why this is a function. "A rule that associates, to a given time, the distance from a swinging pendulum to its lowest point" Click here to see answer by richard1234(5390)
 Question 491908: Please explain why this is a function. "A rule that associates, to a given time, the distance from a swinging pendulum to its lowest point" Click here to see answer by ccs2011(207)

 Question 492632: For each of the following numbers are they functions or, are they not functions? Here are the following pairs. : (-2,3) (-1,2) (0,1) (1,0) Click here to see answer by richard1234(5390)

 Question 492917: I need to know how to find the domain for 1/x. Click here to see answer by MathLover1(6614)

 Question 493156: can you please help me with this function,On a trip Alex avrages 300 miles/day.The distance d he covers is a function of the number of days n. Click here to see answer by stanbon(57219)

 Question 493619: Ethan weighs twice as much as his younger brother Ben. Click here to see answer by Alan3354(30959)

 Question 493814: find the domain and sketch the graph of the function:(4-x^2)/(2-x) Click here to see answer by swincher4391(726)

 Question 494030: okay i've been given a question y=(x+4)^3 and it is written in f(g(x)) form. It asks to fins f(x) and g(x) how do I find that? Click here to see answer by stanbon(57219)

 Question 494332: If |y| = 5 what is the value of y ? possible answers: -24 or 25 0 or 5 -5 or 5 -5 or 0 Click here to see answer by Alan3354(30959)
 Question 494332: If |y| = 5 what is the value of y ? possible answers: -24 or 25 0 or 5 -5 or 5 -5 or 0 Click here to see answer by chessace(471)

 Question 494318: identify the domain and range of the function input=0,1,2,3 output=5,7,15,44 Click here to see answer by chessace(471)

 Question 494636: If you were to graph C(g) what would be the domain and range Click here to see answer by richard1234(5390)

 Question 494673: If you were to graph C(g) what would be the domain and range Ok the problem starts out like this: Imagine you are at a gas station filling your tank with gas. The function C(g) represeents the cost C of filling up the gas tank with g gallons. Given the equation C(g) = 4.25(g) What does th number 4.25 represent Find C(2) Find C(9) For the average motorist name one value for g that would be inappropriate for this functions purpose. Click here to see answer by stanbon(57219)

 Question 494751: 3. The linear equation y= 0.18x + 1.41 represents an estimate of the average cost of gas for year x starting in 2002 (“Consumer price index,” 2011). The year 2002 would be represented by x = 1, for example, because it is the first year in the study. Similarly, 2005 would be year 4, or x = 4. a. What year would be represented by x = 10? b. What x-value represents the year 2022? c. What is the slope, or rate of change, of this equation? d. What is the y-intercept? e. What does the y-intercept represent? f. Assuming this growth trend continues, what will the price of gasoline be in the year 2025? How did you arrive at your answer? 4. The line y = 0.18x + 1.41 represents an estimate of the average cost of gasoline each year. The line 0.17x - y = 1.21 estimates the price of gasoline in January of each year (“Consumer price index,” 2011). a. Are the lines to be intersecting, parallel, or perpendicular? How do you know? Explain your reasoning. Click here to see answer by richard1234(5390)

 Question 494847: Please help me finding the following function rule x:1,2,3,4,5,6... y:7,8,10,14,22,38... I do see how y changes but I am having trouble finding the relationship of x and y. I do not know what y= to for any x. Oliver Click here to see answer by Theo(3458)