# 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 319087: 18 − 6 ÷ 3 • 2 + 7 I believe this is an expression but there wasnt a category for it. Any help would be appreciated!!! Click here to see answer by edjones(7569)

 Question 319128: determine whether the equation defines y as a function of x: y= sqrt(7x-2) Click here to see answer by Fombitz(13828)

 Question 319139: determine whether the given function is even, odd, or neither: f(x)=x^3 + x^2 +4 Click here to see answer by Fombitz(13828)

 Question 318102: Let s(t)=10t^2+5t+80 be the position, in miles, of a car driving on a straight road at time t, in hours. The car's velocity at any time t is given by function v(t)=20t+5 When the car is going 45 mph, it's position is s = ??? miles. Click here to see answer by Fombitz(13828)

 Question 319130: find the domain of the function: h(x)= (x-1)/(x^3-9x) Click here to see answer by solver91311(16877)

 Question 319142: given functions f and g, determine the domain of f+g f(x)=3x^2 -9 g(x)=2x^3 -10 Click here to see answer by nyc_function(2733)

 Question 319132: find the domain of the function: f(x)= sqrt(4-x) Click here to see answer by solver91311(16877)

 Question 319282: how did changing the constant from y=5x+8 to y=5x-2 affect the graph? Click here to see answer by stanbon(57307)

 Question 319342: This is a word problem. The area of rectangle is 250 square inches. The length of the rectangle is 5 less than 3 times the width. Show the equation that will find the width and then use this equation to find the length and width or the rectangle. Click here to see answer by vleith(2825)

 Question 319396: Find an equation of the line satisfying the conditions given. Express your answers in standard form. Please explain. Parallel to 3x - y = -5 and passing through (-1, 0) Click here to see answer by Alan3354(30993)

 Question 319395: Without graphing determine whether the following pairs of lines are (a paralell), (b) perpindicular, or (c) neither. 5x - 6y = 19 6x + 5y = -30 Click here to see answer by stanbon(57307)

 Question 319654: Given n(x) = 6x^2 + 11, find n(-3). Click here to see answer by checkley77(12569)

 Question 319658: Which set of ordered pairs represents a function from P to Q? P= {2,4,6,8} Q={-2,0,2} a){(2,-2),(4,0),(4,2),(6,0),(8,-2)} b){(6,-2),(6,0),(6,2)} c){(6,0),(4,-2),(2,0),(4,2),(6,-2)} d){(4,0),(6,0),(8,0)} e){(2,2),(6,0),(2,-2),(6,2)} Click here to see answer by stanbon(57307)

 Question 319656: Evaluate the function at the specified value of the independent variable and simplify. f(x) = { x, x/= -1 x^2-3x, -1< x <= 1 x^3-3x^2, x>1 f(-2/5) Click here to see answer by stanbon(57307)

 Question 319923: The function H described by H(x)=2.75x+71.48 can be used to predict the height, in centimeters, of a woman whose humerus is x cm long. Predict the height of a woman whose humerus is 32 cm long. Please help I am stuck Click here to see answer by ankor@dixie-net.com(15649)

 Question 320041: given functions f and g perform the indicated operations. f(x)=sqrt(4x+4), g(x)= sqrt(4x-9) find fg possible answers: A)(4x+4)(2x-3) B)(sqrt(4x+4))(sqrt(4x-9)) C)(2x-3)(sqrt(4x+4) D)(4x+4)(4x-9) Click here to see answer by Fombitz(13828)

 Question 320047: don't know if this is the right category or not. Evaluate (f/g)(-3) where f(x)=x^2 - 9x - 10 and g(x)=9x + 11. Click here to see answer by Fombitz(13828)

 Question 320126: Having a hard time evaluating this equation of a nonlinear function completely lost can someone please explain to me how to find the right answer? y = 3/(x-1) Click here to see answer by Fombitz(13828)

 Question 320133: I am terrible at finding the domain Find the domain of the function: 9(x)=5/7-6x Thank you Click here to see answer by solver91311(16877)

 Question 320217: Find the domain of the function P(X)=x^2-2x+4 BY X^2 I think this means squared right because that is what I mean. What is the domain of P? Click here to see answer by nyc_function(2733)

 Question 320124: 2x = y use x = 5 and x = 15 to find the two solutions for y. Click here to see answer by rfer(12657)

 Question 320811: For the Function f(x)=x^2-x+1 Find f(0) Solve f(x)=0 Click here to see answer by Fombitz(13828)

 Question 321706: Given that f(x)= 4/x^2-5 and g(x) = sqrt x, find (f o g)(x) and its domain. Click here to see answer by Fombitz(13828)

 Question 321857: I need help figuring out how to work these problems. I will only submit one, and maybe that can help me figure out how to do the others. Please and Thank you very much! My directions: Solve using the five-step problem-solving process. Show all steps necessary to strive at your solution. The sum of twice a number and 4 less than the number is the same as the difference between -32 and the number. What is the number? Click here to see answer by solver91311(16877)

 Question 321894: What is the value of g(x) - f(x) if f(x) = 2x + 4, g(x) = 3x - 2 and x = 12? 3x - 2 - (2x + 4) = 3x - 2 - 2x - 4 = x - 6 If x = 12 , x - 6 = 12 - 6 = 6 Click here to see answer by Alan3354(30993)

 Question 321897: For a ________ to be a ________, there must be only and exactly one y that corresponds to a given x Click here to see answer by Edwin McCravy(8908)

 Question 321999: If f(x) = 4x - 2 and g(x) = 3x. What is f(g(2))? I got 22 Evaluate t(y) = y3 + 64 if y = -4. If f(x) = x - 2, for what value of x does f (3x) = f(x+1)? I got 6 Click here to see answer by Fombitz(13828)

 Question 322023: What is the smallest integer that is NOT in the domain of the function below? f(x)= squareroot of 4-x my answer is 5 Click here to see answer by nyc_function(2733)

 Question 321994: what is the result of substituting a value for a variable in a function? Click here to see answer by nyc_function(2733)

 Question 321936: What is the smallest integer that is NOT in the domain of the function below? f(x)= sq. root of 4-x If f(x) = x - 2, for what value of x does f (3x) = f(x+1)? Evaluate t(y) = y3 + 64 if y = -4. Click here to see answer by brittanny(1)

 Question 322111: y = x^2 -2 is a function, but x = y^2 - 2 is not... can you say why? Click here to see answer by Edwin McCravy(8908)

 Question 322256: I have a question: Give an ordered pair (u,v) of numbers that satisfy the following equation: u-2v=2 Click here to see answer by Alan3354(30993)

 Question 322400: find the domain of the following function for the range given below. f(x)=-4x+1 range = (0,1,2,3) Click here to see answer by solver91311(16877)

 Question 322392: Imagine you are at a gas station filling your tank with gas. The function C(g) represents the cost C of filling up the gas tank with g gallons. Given the equation C(g)=3.50(g) please help don't understand....... find c(7) Click here to see answer by Earlsdon(6287)

 Question 322390: Imagine you are at a gas station filling your tank with gas. The function C(g) represents the cost C of filling up the gas tank with g gallons. Given the equation C(g)=3.50(g) Please help don't understand!!!! What does the number 3.50 represent in this problem? Click here to see answer by solver91311(16877)
 Question 322390: Imagine you are at a gas station filling your tank with gas. The function C(g) represents the cost C of filling up the gas tank with g gallons. Given the equation C(g)=3.50(g) Please help don't understand!!!! What does the number 3.50 represent in this problem? Click here to see answer by jim_thompson5910(28593)

 Question 322457: (-4m^4)^2 Hi I'm not really sure how to go about working out this problem any help would really help me! Thank you in advance!!! Click here to see answer by jim_thompson5910(28593)

 Question 322494: Imagine you are at a gas station filling your tank with gas. The function C(g) represents the cost C of filling up the gas tank with g gallons. Given the equation C(g)=3.5(g) Find C(3) please help Click here to see answer by jim_thompson5910(28593)

 Question 322499: Imagine you are at a gas station filling your tank with gas. The function C(g) represents the cost C of filling up the gas tank with g gallons. Given the equation C(g)=3.50(g) If you were to graph C(g), what would be an appropriate domain and range? \ please help Click here to see answer by jim_thompson5910(28593)

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