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 46641: Can you help me to learn algerbra 1 and 2 in a few mins because the school skipt me to a high level and I don;t want to go back Click here to see answer by adamchapman(301)

 Question 46642: HI, I need to know algerbra better because I have so much stuff I can't practice or check my homework a few times, so I need some one to help me master this math in a few mins, or on fridays Click here to see answer by tutorcecilia(2152)

 Question 46847: Find all verticle and horizontal asymptotes h(x) =3x/x+5 Click here to see answer by stanbon(57282)

 Question 46855: this question asks to: "Find the domain and range of each function": 1.) y=x-1 2.) y=1/x 3.) y=1/(x^2+1) 4.) y=1/squareroot of x^2+x+1 can someone please show me how to do these? thanks for the help and please do help. Click here to see answer by Nate(3500)

 Question 47565: For the equation x-2sqrt.x=0 , perform the following: a) Solve for all values of x that satisfies the equation. Answer: Show work in this space. b) Graph the functions y = x and x-2sqrt.x=0 on the same graph (by plotting points if necessary). Show the points of intersection of these two graphs. Graph: Points of intersection: Click here to see answer by venugopalramana(3286)

 Question 47563: For the function, y= 1/x-2, give the value of y then using these points, draw a curve Click here to see answer by venugopalramana(3286)

 Question 47549: The table shows several value of the function f(x)=-x^3+x^2-x+2. Complete the missing values in the table, and then use these values and the imtermediate value theorem to determine (an) interval(s) where the function must have zero. Table: X |-2|-1| 0| 1| 2| y |16| | | | | I initially had 8, 0, -8, -4 in the blank spots of teh table for y but I am not sure if that is correct. Click here to see answer by stanbon(57282)

 Question 47574: Given f(x) x^2+5, and g(x)=sqrt x-3, find (fog)(x) Click here to see answer by Nate(3500)

 Question 47573: Given f(x) x^2-4x-21, find the vertex and the x-intercept(s) Click here to see answer by Nate(3500)

 Question 47646: A shop sells a single product for \$1.50 per unit. The fixed monthly expenses are \$630 and the cost of each item is \$0.60. How many items of the product must the shop sell in this month to break even? Thank you, Melissa. Click here to see answer by venugopalramana(3286)

 Question 47639: What do the following mean if: a.) an expression is a function b.) y is directly proportional to x (give an example) c.) the coefficient of the third term is 5 ( give an example) d.) a function only has one root e.) a function is a polynomial can someone help me with explanations for the above statements please? THANKS! any help will be nice. Click here to see answer by stanbon(57282)

 Question 47721: Hi can someone help me on this problem? Given: f(x)=x^2-14x+44 find the x value of the turning point my answer was x=14 am I correct? Click here to see answer by stanbon(57282)

 Question 47757: solve by any method you prefer x^2 = 11 - x Click here to see answer by stanbon(57282)

 Question 47776: Find the exact solution to the equation 3^x+5 = 9^x. I am having difficulty working this one out. Please be so kind as to help me with this problem. Click here to see answer by pizza(14)
 Question 47776: Find the exact solution to the equation 3^x+5 = 9^x. I am having difficulty working this one out. Please be so kind as to help me with this problem. Click here to see answer by stanbon(57282)

 Question 47998: Find the exponential function of the form f(x)=ba^x+c with y-intercept 2, horizontal asymptote y=-2, that passes through the point P(1,4). Possible solutions are: a. f(x)=-2(2^x) b. f(x)=2(2^x)-2 c. f(x)=2(1.5^x)-2 d. f(x)=4(1.5^x)-2 Click here to see answer by stanbon(57282)

 Question 48005: I am struggling with solving this problem. I hope there is someone who would be so kind as to show me all the steps in solving this problem. For the function defined by f(x)=5x-4, find a formula for f^-1(x). Thank you. Click here to see answer by stanbon(57282)

 Question 48126: I was to rewrite the equation as a function of x and this is what I came up with but I cannot figure out which method is right. 2x - 8y = 48 2x + 8y = 2x+48 8y = 2x + 48 8 8 8 y = 2x + 6 8 f(x) = 2x + 6 8 Click here to see answer by Earlsdon(6287)

 Question 48544: Given f(x) = 4x – 5, find f(a – 1). A) 4a – 9 B) 4a – 6 C) a – 2 D) a – 9 PLEASE HELP THIS OLD LADY OUT...SHE IS DESPERATE???!!! THANK YOU Click here to see answer by cowess(34)

 Question 48547: I have a table that has the following values for x, f(x) & g(x): x ---| 1,2,3,4,5 f(x)-| 5,3,5,1,2 g(x)-| 4,5,1,3,2 From the information a from the the table above, providing values for f(x) and g(x) evaluate (fog)^-1(3) the choices I have are: a. 1 b. 2 c. 4 d. 5 Thank you very much for you help in advance. Click here to see answer by stanbon(57282)

 Question 48545: Please help me work out this problem. For the function defined by f(x)=2-x^2, 0<=x, use a sketch to help find a formula for f^-1(x). My possible answers to choose from are: a. f^-1(x)=x^2-2, x<=2 b. f^-1(x)=1/2-x^2, 0<=x c. f^-1(x)=sqrt2+sqrtx, 0<=x d. f^-1(x)=sqrt 2-x, 0<=2 Click here to see answer by stanbon(57282)

 Question 48716: Solve: 10x - 1/4 = 9x + 3/8 Click here to see answer by checkley71(8403)

 Question 48718: Solve: 3x - 7 = 2x + 8 Click here to see answer by checkley71(8403)
 Question 48718: Solve: 3x - 7 = 2x + 8 Click here to see answer by tutorcecilia(2152)

 Question 48724: Solve: 4(7x + 10) = 3(9x - 5) + 20 Click here to see answer by stanbon(57282)

 Question 48839: I am not stupid but these two problems have me stumped... any help is appreciated given g(x)=4x-3, find g(3a). HELP ME PLEASE given f(x)=x^2 - x+7, find f(0) Click here to see answer by atif.muhammad(135)

 Question 48877: Solve the system by addition or substitution. 3x + 6y = 0 x = 2/3 Click here to see answer by cowess(34)

 Question 48876: f (x) = x2 - 7x + 10; find (a) f (0), (b) f (5), and (c) f (-2) Click here to see answer by gsmani_iyer(180)

 Question 48895: please help! I have been looking at this question for just over a week and ive put it off and done my others now this is one of the last ones! let p : N x N --> N be the function defined by p(m,n) ={1 if n=0; m * p (m, n-1) otherwise;) what is the value of p (2, 3)? Click here to see answer by alka001(14)

 Question 49009: Explain please. When you use Jay's Taxi Service, a two-mile trip costs \$6.30, a five-mile trip costs \$11.25, and a ten-mile trip costs \$19.50. Write an equation to describe this relationship and use it to find the coast of a one-mile trip. Click here to see answer by checkley71(8403)

 Question 49118: Evaluate function for the value specified. f(x )=x to the 2nd power-7x+10; find (a) f(0) (b) f(5) and (c) f(-2) I do not understand what they are asking on this practice question. Click here to see answer by Born2TeachMath(20)

 Question 49131: I have a word problem that I have been working on that I am not getting. A manufacturer of compact stereos believes that the revenue the company receives is related to the price (p) of a stereo by the function R(p)= 180p-1/3p^2. What price will give the maximum revenue, and what is the maximum revenue? So what I am wondering is..... Do I just plug in different prices? I have done this, but I just kepp getting higher numbers. When do I know I have the max number? I was hoping it would just finally go into the negative, but it does not. so..... Any ideas? Click here to see answer by venugopalramana(3286)

 Question 49122: the inventor of a new product believes that the cost of producing the product is given by the function C(x)=1.75x +7000 If the inventor charges \$4.00 per unit, then her profit for producing and selling x units is given by the function P(x)=2.25x-7000 a) what is her profit if she sells 2000 units b)what is her profit if she sells 5000 units what is the break even point for sales. Please help Click here to see answer by venugopalramana(3286)

 Question 49119: rewrite the following equation as a function of x -3x + 4y=11 Click here to see answer by venugopalramana(3286)