# 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 74225: what values are excluded from the domain of the function a)f(x)=5x+1 b)g(x)=x-4y=8 Click here to see answer by jim_thompson5910(28476)

 Question 74222: find the range of the function given f(x)=-x^2+3x-5 ; domain={-1,3} Click here to see answer by rmromero(383)

 Question 74236: what values are excluded from the domain of the function a) f(x)=5x+1 b)g(x)=3x+1/x+3 Click here to see answer by jim_thompson5910(28476)

 Question 74232: can u give a diagram, give me the domain and the range. plus how do u now which is a function or not 0 0 1 1 -1 2 2 -2 please and thank you..... Click here to see answer by rmromero(383)

 Question 74229: how do u now which is a function or not 0 0 1 1 -1 2 2 -2 Click here to see answer by rmromero(383)

 Question 74226: 4.graph a)by using the slope and the y-intercept Click here to see answer by rmromero(383)

 Question 74311: could you please help me to solve this problem..it is from a question on a hand out. find the inverse of f(x) = 3x+1 where f: R - R i figured y=3x+1 y-1=3x and broke it down with an swer of x=y-1/3. thanks for your help. Click here to see answer by jim_thompson5910(28476)

 Question 74313: can you help me with problem? it is from a multiple choice hand out. f is a function defined by f(x)= -x/5 and g is a funciton defined by g(x)= 7-3x then 4g-5f= thanks for any help Click here to see answer by jim_thompson5910(28476)

 Question 74339: THE PRODUCT OF 8/11 AND A NUMBER IS 11/3; WHAT IS THE OTHER NUMBER? Click here to see answer by checkley75(3666)

 Question 74600: what are the domains of these expressions? How do I find these domains? 1). the sqrt of 2-x 2). x-3 over x+2 3). 3x^2 +2x -8 Click here to see answer by stanbon(57219)

 Question 74672: evaluate the following:and identify the domain Functions for the problem: f(x)= 2x^2+5x+7 and g(x)=x^3+2 1. (f+g)(x) 2. (f-g)(x) 3. (g.f)(x) 4. (f/g)(x) Click here to see answer by jim_thompson5910(28476)

 Question 75040: What is the natual domain for the function: f(x)= √x^2-9 Click here to see answer by stanbon(57219)

 Question 75570: It says "find f(x)=0" what does it mean? The porblem: f(x)=3x-12 Click here to see answer by jim_thompson5910(28476)

 Question 72003: Help please: Please show and explain work Question 23 (Worth 2 points) Find the product (x+5)(x+7). Question 29 (Worth 2 points) Solve the inequality and describe the graph of the solution. -3x + 4 > 7 Question 31 (Worth 2 points) Which of the following relations is NOT a function? (2,1), (1,-2), (-3,2), (2,-3) (2,-1), (-1,2), (-2,3), (3,-2) (-3,-2), (-1,0), (0,1), (1,2) (-2,1), (-1,2), (1,1), (2,3) Question 36 (Worth 2.0 points) What is the degree of this polynomial: 3x3 - 2y4 + 2xy2 Question 41 (Worth 2 points) Solve the following expression when x = 4, and y = -3. 2(x-2y) Answer blank 1: Answer not accepted. Expected Answer: 20 Question Information: 2[4-2(-3)]= 2(4+6)= 2(10)= 20 Question 44 (Worth 2 points) Find: - 8xy(4x2y + 7x - 6y2) Question 46 (Worth 2 points) Solve the following system of equations using the substitution method: 4x - y = -6 x + 2y = 3 Click here to see answer by checkley75(3666)

 Question 75652: Given f(x) = –x3 – 3x2 – 2x – 6, find f(–3), f(0), and f(3) Now do I have to substitue a number for x? I am so confused!! Thanks for your help! Click here to see answer by jim_thompson5910(28476)
 Question 75652: Given f(x) = –x3 – 3x2 – 2x – 6, find f(–3), f(0), and f(3) Now do I have to substitue a number for x? I am so confused!! Thanks for your help! Click here to see answer by checkley75(3666)

 Question 75755: Divide and write in simplest form. 15 * 25 21 14 Click here to see answer by checkley75(3666)

 Question 75997: a)In function notation, write the following: He takes a real number, multiplies it by 3, then adds 4, and then subtracts one-eighth of the result of multiplying the original number by -2. Is it f(x) = 13/4 x + 4? b)State the inverse function. Is it f^-1(x) = 4/13 x - 16/13? Click here to see answer by jim_thompson5910(28476)

 Question 76190: During a chemistry experiment, the cork in a .5 foot tall beaker with an effervescent solution pops off with an ititial velocity of 20 feet per second. How many second does it take for the cork to hit the table? I need help in how to work out the problem. I believe I use the equation: y=Ax^2 + Bx + C. Mitch Click here to see answer by scott8148(6628)

 Question 76315: The sum of the reciprocals of two consecutive odd integers is 8/15.Find the larger integer Click here to see answer by checkley75(3666)

 Question 76319: given f(x)= 4x/x+2, find f-1(x) (inverse of function x) Click here to see answer by stanbon(57219)

 Question 76314: The sum of the reciprocals of two odd integers is 8/15. Find the larger integer. Click here to see answer by ankor@dixie-net.com(15624)

 Question 76364: I would like help completely factoring 28ab^2c-56a Thanks! Click here to see answer by bucky(2189)

 Question 76518: hello out there,I am stuck in the domain problem solving,I really need some help badly,the first problem is,What is the domain of the relation {(1,4)(0,-2)(2,3)(-1,4)(-3,0)}.the next one is,What is the range of the relation {(1,4)(0,-2)(2,3)(-1,4)(-3,0).Next is,Find the domain of x minus 2y=1 if the range is {-2,0,5,8}.And the last one is,Solve y=-2x+7 if the domain is {-2,0,4,7}.Thanks to whoever can help. Click here to see answer by ankor@dixie-net.com(15624)

 Question 76625: The diameter of the Milky Way disc is approximately 9 x 10^20 meters. How long does it take light, traveling at 10^16 m/year to travel across the diameter of the Milky Way? 900,000 years 90,000 years 9,000 years 900 years Click here to see answer by bucky(2189)

 Question 76943: can you help me solve this problem find the difference quotient f(x+h)- f(x) for 2-x^2 ____________ h Click here to see answer by funmath(2925)

 Question 77288: I don't understand how to do this. Using the information in the following table providing values of f(x) and g(x). Evaluate (f o g)^-1(2) x 1 2 3 4 5 f(x) 3 4 5 1 2 g(x) 5 4 2 3 1 Click here to see answer by stanbon(57219)

 Question 77322: if an object is dropped off of a tower, the velocity , v, of the object after t seconds can be obtained by multiplying t by 32 and adding 10 to the results. express v as a linear fucntion of t. Click here to see answer by jim_thompson5910(28476)
 Question 77322: if an object is dropped off of a tower, the velocity , v, of the object after t seconds can be obtained by multiplying t by 32 and adding 10 to the results. express v as a linear fucntion of t. Click here to see answer by chitra(359)

 Question 77320: a rock falls from a tower that is 176ft high. as it is falling , its height is given by the formula h=176-16t^2. how many seconds will take for the rocks to hit the ground (h=0)? Click here to see answer by jim_thompson5910(28476)

 Question 77325: a rock falls from a tower that is 176ft high. As it is falling its height is given by the formula h=176-16t^2. how many seconds will it take for the rock to hit the ground(h=0) Click here to see answer by jim_thompson5910(28476)
 Question 77325: a rock falls from a tower that is 176ft high. As it is falling its height is given by the formula h=176-16t^2. how many seconds will it take for the rock to hit the ground(h=0) Click here to see answer by rajagopalan(158)

 Question 77344: Jan has been offered a job that promises a salary package represented by the function S(t)=38,000(1.055)^T where t is the number of years worked. A) what is her starting salary? B) Evaluate S(3) and explain its meeting. Click here to see answer by jim_thompson5910(28476)

 Question 77392: I'm having trouble with algebra the text book we us is californias edition algebra 1 Click here to see answer by stanbon(57219)

 Question 77591: Write the linear equation in standard form: y=5/8x+3/8 Click here to see answer by stanbon(57219)

 Question 77589: Write the equation of the line, in slope-intercept form, that contains the points: (7,4) and (-8,4) Click here to see answer by Edwin McCravy(8879)