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

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 Question 741573: I need help how do you right this in standard form ? 1)f(x)=4-x+x^2 Click here to see answer by stanbon(60774)

 Question 741809: if f(x)=3x-2 and g(x)=6 -4x find f(x)+ g(x) Click here to see answer by only4christ(12)

 Question 742247: Find an equation of a circle having a diameter with endpoints (-3,5) and (7,3) Click here to see answer by stanbon(60774)

 Question 742275: Given that f(x)= x^2-x-3, find the following: f(x+h) - f(x) _____________ h Click here to see answer by stanbon(60774)

 Question 742452: given t(x)=5 t(-3) Click here to see answer by tommyt3rd(3721)

 Question 742604: Use the remainder theorem to find P(-3) for P(x)=x^4+2x^3-x-4 Specifically, give the quotient and the remainder for the associated division and the value of P(-3) Click here to see answer by stanbon(60774)

 Question 742928: Long Division. Perform the indicated division using long division. Write answer in form q(x)+r(x)/d(x) x3 - 9/x2 + 1 Click here to see answer by stanbon(60774)

 Question 743458: what is the x and y intercepts of the function (x^2-16)/ (x+3) also what is the domain? Click here to see answer by nyc_function(2741)
 Question 743458: what is the x and y intercepts of the function (x^2-16)/ (x+3) also what is the domain? Click here to see answer by stanbon(60774)

 Question 743599: Please help me solve this equation: Given f(x)= x^2 + 7 and g(x)= x^2 - 7, find f of g(x) Click here to see answer by josgarithmetic(3317)
 Question 743599: Please help me solve this equation: Given f(x)= x^2 + 7 and g(x)= x^2 - 7, find f of g(x) Click here to see answer by tommyt3rd(3721)

 Question 743702: Tom was given this function table to complete. X: -3, -2, -1, 0, 1, 2, 3 Y: -2, 0, 2, 4, 6, 8, 10 What is the rule of this function? Click here to see answer by stanbon(60774)

 Question 744069: what is the range of y=x-_1_ if the domain is {-1,1,5} 2 Click here to see answer by solver91311(18785)

 Question 744597: Here are some real life examples for you. Can you determine whether or not each one is a function? Explain your reasoning. * the relationship between the amount of a water bill and the amount of water used. * the relationship between the average score on a standardized test an individual student's score. * the relationship between the color of a person's eyes and the color of that person's parents' eyes. * the relationship between a person's height and that person's weight. Click here to see answer by lynnlo(4174)

 Question 744604: Which of the following relations is a function? A.(2, 6), (3, 9), (4, 2), (3, 6) B.(2, 8), (3, 6), (2, 4), (0, 2) C.(3, -2), (4, 7), (-2, 5), (-4, 5) D.(4, 7), (-2, 5), (1, 3), (-2, 1) Click here to see answer by lynnlo(4174)
 Question 744604: Which of the following relations is a function? A.(2, 6), (3, 9), (4, 2), (3, 6) B.(2, 8), (3, 6), (2, 4), (0, 2) C.(3, -2), (4, 7), (-2, 5), (-4, 5) D.(4, 7), (-2, 5), (1, 3), (-2, 1) Click here to see answer by MathLover1(7480)

 Question 744609: let f(x)=4x-2 and g(x)=3x^2+2x-3 find: this is a fraction when i put the slash key the number after the slash is the denominator f(x=h)-f(x)/h i really don't know exactly what to do with this problem your help would be greatly appreciated thanks so much Click here to see answer by lynnlo(4174)

 Question 744627: integrate 3x^2-1/x^3 Click here to see answer by Cromlix(2315)

 Question 744970: Find all zeros of the function. h(x)=5x^4+28x^3-48x^2+8x+7 Thank you. Click here to see answer by Alan3354(34677)

 Question 745032: Suppose that the functions q and r are defined as follows: q(x)=x^2+3 r(x)= sqrt x+5 Find the following: (r o q)(1)= (q o r)(1)= Thank you!! Click here to see answer by josgarithmetic(3317)

 Question 745105: Use composition of functions to show that the functions f(x)=4-5x and g(x)=4/5-1/5 x are inverse functions Carefully show that (fog)(x)=x and show that (gof)(x)=x. Click here to see answer by sachi(531)
 Question 745105: Use composition of functions to show that the functions f(x)=4-5x and g(x)=4/5-1/5 x are inverse functions Carefully show that (fog)(x)=x and show that (gof)(x)=x. Click here to see answer by stanbon(60774)

 Question 745111: What is the equation y = 0.25x – 0.75 in general form? Select one: a. –x + 4y – 3 = 0 b. –x + 4y + 3 = 0 c. x – 4y – 3 = 0 d. x – 4y + 3 = 0 Click here to see answer by sachi(531)

 Question 745110: The height s, in feet, of a rock thrown upward at an initial speed of 64 ft/sec from a cliff 50 ft above an ocean beach is given by the function s(t)=-16t^2+64t+50, where t is the time in seconds. Find the maximum height above the beach that the rock will attain. Click here to see answer by josmiceli(10616)

 Question 745147: How do I write a rule for each function? x: f(x): -1 -11 0 -5 1 1 2 7 Click here to see answer by stanbon(60774)

 Question 745384: The equation of the revenue function, R(x). Demand function: p = -2x + 2 700 Cost function: C(x) = 300x + 540 000 Click here to see answer by stanbon(60774)

 Question 742612: The function f is defined by f(x)= x^2-2x Find f(3a) Click here to see answer by tommyt3rd(3721)

 Question 746038: Gostaria de calcular a função f(x + 3) = x2 - 4 quanto vale f(f(5)). obrigado, Givaldo Click here to see answer by Edwin McCravy(9717)

 Question 746262: For the given function x^2+1, find f(x+h)-f(x)/h Click here to see answer by nerdybill(7090)

 Question 746428: Suppose that the relation is defined as follows. {(5,5),(8,0),(6,-2),(-9,-8)} Give the domain and range of G. Write your answers using set notation Click here to see answer by tommyt3rd(3721)

 Question 746783: Find the range of the function. f(x)=1 (divided by) square root of -x Click here to see answer by MathLover1(7480)

 Question 747682: (Hi... I'm Dannielle. 8th grade student taking Algebra1) I'm confused... on a preparation packet that's 10% of my grade... Lovely isn't it? Yet another thing my Algebra1 teacher never got the chance to teach. The question says: "A function of g is described : g(x)=(x-3)2 +6... The domain of g is all real numbers greater than 0. The range of g is all real numbers greater than or equal to - A.) 9, B.) 6, C.) 3, D.) -3... " Okay... correct me if I'm wrong, but does g(x) mean basically the same thing as the f(x) but the function is just labeled g instead of f? Yes? No? Sigh.. Okay. All I could think of doing was starting by factoring out the original equation but I just got x2-3x+15. I'm almost positive that I did that wrong and to be completely honest I'm not exactly sure that was what I was supposed to be doing to get the answer. Any suggestions or help would be greatly appreciated... (PS: I don't know if I'm asking this in the correct category so my apologies if this is the wrong one to be asking this is! ) Click here to see answer by stanbon(60774)
 Question 747682: (Hi... I'm Dannielle. 8th grade student taking Algebra1) I'm confused... on a preparation packet that's 10% of my grade... Lovely isn't it? Yet another thing my Algebra1 teacher never got the chance to teach. The question says: "A function of g is described : g(x)=(x-3)2 +6... The domain of g is all real numbers greater than 0. The range of g is all real numbers greater than or equal to - A.) 9, B.) 6, C.) 3, D.) -3... " Okay... correct me if I'm wrong, but does g(x) mean basically the same thing as the f(x) but the function is just labeled g instead of f? Yes? No? Sigh.. Okay. All I could think of doing was starting by factoring out the original equation but I just got x2-3x+15. I'm almost positive that I did that wrong and to be completely honest I'm not exactly sure that was what I was supposed to be doing to get the answer. Any suggestions or help would be greatly appreciated... (PS: I don't know if I'm asking this in the correct category so my apologies if this is the wrong one to be asking this is! ) Click here to see answer by MathTherapy(1817)

 Question 747714: For the given function, find the following values. g(t)=*fourth root*t-8= g(633)= g(2)= Could really use help on this one. Very confused. Thanks, Cassie Click here to see answer by lwsshak3(7679)

 Question 747887: The fuel efficiency F for a particular car is given by F(x) = –0.018 x2 + 1.548 x + 4.2 What is the fuel efficiency if the car’s speed is 70 mph? i got 24.36, is this correct? What speed will yield the maximum fuel efficiency? Click here to see answer by Alan3354(34677)

 Question 747953: Find the indicated values for the function. g(x)= - sqrt 3x + 3 Click here to see answer by tommyt3rd(3721)

 Question 747886: I have two math related questions in need of explanation. 1rst:x:6x+8-3x+3=x-1. 2nd: After a 20%discount and 6% tax, a guitar cost \$530.00. What was the original price? Click here to see answer by rfer(13569)

 Question 748180: The function f(t) = -0.14t2 + 0.5t + 30.6 models the U.S. population in millions, ages 65 and older, where t represents years after 1990. The function g(t) = 0.56t2 + 12.36t + 105.7 models the total yearly cost of Medicare in billions of dollars, where t represents years after 1990. (a) What does the function g/f represent? (b) Find (g/f)(15). Click here to see answer by lynnlo(4174)

 Question 746918: find the inverse of f(x)=x^3 +3 find the domain and range of f(x) Click here to see answer by tommyt3rd(3721)

 Question 748426: How do I set up and solve this problem?? Let f(x) = 2x^2+x-3 and g(x)= x-1. Perform each function operation and then find the domain. 1. (f-g)(x) Click here to see answer by DrBeeee(577)

 Question 748646: State the equations of the verticaland horizontal asymptotes of g(x)= 8/x+5 +6 Click here to see answer by stanbon(60774)

 Question 748754: Determine whether the function is linear or quadratic. Identify the quadratic, linear, and constant terms. f(x) = (3x-5)(3x + 2) Click here to see answer by stanbon(60774)

 Question 742639: if disatance between two points (a+2,3)and (5,-1) is 5 units,find the value of a. Click here to see answer by tommyt3rd(3721)

 Question 750115: how to find the domain of n(x)=x+3/4 Click here to see answer by tommyt3rd(3721)

 Question 750175: What is the domain of the function defined by the following equation? 1/x Click here to see answer by JoeTaxpayer(186)