# 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 339488: For each function, find the indicated values. f(x)=2x-5 I just need help getting started. Click here to see answer by Fombitz(13828)

 Question 339139: what is the domain of x+3/x cubed 25x? Click here to see answer by Fombitz(13828)

 Question 339399: How do I find the indicated values for the function f(x)= √2x-10 ? Click here to see answer by Fombitz(13828)

 Question 339975: When the monarch butterfly is migrating to the south, it has an average speed of 80 miles per day. Write an equation that shows the realtionship between the number of days (t) and the distance (in miles) it has traveled (d) Click here to see answer by josmiceli(9817)
 Question 339975: When the monarch butterfly is migrating to the south, it has an average speed of 80 miles per day. Write an equation that shows the realtionship between the number of days (t) and the distance (in miles) it has traveled (d) Click here to see answer by checkley77(12569)

 Question 339989: composition of functions Given: f(x)= 2/x (fof)(x) so far i have (fof)(x)=f(f(2/x))=f(2/x)=2/2/x however i need to slipify this farther and do not know how. Click here to see answer by Fombitz(13828)

 Question 340172: determine whether the equation defines y as a function of x. x2(SQUARE) + Y=36 Click here to see answer by Fombitz(13828)

 Question 340624: Could you help me Explain how Multiplying the edge length of a cube by a number affects the volume of the cube. Thanks! Click here to see answer by solver91311(17077)

 Question 340706: Can you help me understand if y=1/2-6 could be a function & explain? Click here to see answer by stanbon(57962)

 Question 340924: f(x)=sqrt(x+1/x-5) the domain is (-infinity,-1)u(5,infinity) does the inequality sign on the top of the fraction point the opposit way. When solving I started out with x+1>or equal to 0 and x-5>or equal to 0 so my answer was (-1,5)u(5,infinity) where did I go wrong? Are all functions able to be solved to discover their domain or is it a guessing game? Click here to see answer by solver91311(17077)

 Question 341175: Is (city,area code) a function? Is (person,birth date) a function? Is (first name, last name) a function? Is (student, school ID number) a function? Click here to see answer by stanbon(57962)

 Question 341202: What is the domain of f(x) = 10/x^2-2x ? Click here to see answer by stanbon(57962)

 Question 341219: algebra funtions x 2 5 4 13 6 21 8 29 10 37 what is the function rule? Click here to see answer by Alan3354(31518)

 Question 341165: Kim starts to walk 3 mi to school at 7:30 A.M. with a temperature of 0°F. Her brother Bryan starts at 7:50 A.M. on his bicycle, traveling 10 mph faster than Kim. If they get to school at the same time, then how fast is each one traveling? How do I solve this word problem because I am at a lost. I am totally pulling my hair out with this one. Please help me somebody!!!! Click here to see answer by galactus(183)

 Question 341337: Find the domain of the expression. -4 /(3-x) A. All real numbers x such that x ≠ -3 B. All real numbers x such that x ≠ 0 C. All real numbers x such that x ≠ 4 D. All real numbers x such that x ≠ 3 Click here to see answer by edjones(7569)

 Question 341433: Let f(x) = 3x – 42 and g(x) = 5x. Part 1 [4 points] What is (f ◦ g)(x) ? Part 2 [2 points] Use complete sentences to describe the method you used to solve this problem. Click here to see answer by Theo(3504)

 Question 340858: Directions: For each function f, construct and simplify the difference quotient. f(x)=3x-5 - I have no problem with setting up the problem, but I have the most trouble with solving with fractions. Click here to see answer by Fombitz(13828)

 Question 341753: I need help with this problem: Find the domain x+13/x^2-1 Click here to see answer by stanbon(57962)

 Question 342264: Suppose you have a lemonade stand, and when you charge \$1 per cup of lemonade you sell 48 cups. But when you raise your price to \$2 you only sell 27 cups. Write an equation for the number of cups you sell as a function of the price you charge. Denote "C" for number of cups, and "P" for the price you charge. Assume the function is linear. Click here to see answer by MathTherapy(1480)

 Question 342353: Take a look at the table below and write out an equation for f(x). Show your work. x -3 -2 1 3 4 f(x) 0 3 12 18 21 Click here to see answer by stanbon(57962)
 Question 342353: Take a look at the table below and write out an equation for f(x). Show your work. x -3 -2 1 3 4 f(x) 0 3 12 18 21 Click here to see answer by Edwin McCravy(8999)

 Question 342375: A size 36 shoe in France is size 3.5 in England. A function that converts shoe sizes in France to those in England is g(x)=3x-94 over 4 fraction. A size 6 shoe in the United States is size 3.5 in England. A function that converts shoe sizes in England to those in the United States is f(x)=x+5 over 2 the 5/2 is a fraction. a. Use composition of functions to find a function that converts shoe sizes in France to those in the United States. Simplify the function. b. Determine the shoe size in the United States for a size 38 shoe in France. Click here to see answer by stanbon(57962)

 Question 342277: A box with an open top is to be constructed from a rectangular piece of cardboard with dimensions 18 in. by 30 in. by cutting out equal squares of side x at each corner and then folding up the sides as in the figure. Express the volume V of the box as a function of x. Click here to see answer by ankor@dixie-net.com(15746)
 Question 342277: A box with an open top is to be constructed from a rectangular piece of cardboard with dimensions 18 in. by 30 in. by cutting out equal squares of side x at each corner and then folding up the sides as in the figure. Express the volume V of the box as a function of x. Click here to see answer by nyc_function(2733)

 Question 342638: Hello I am needing help on this question. Provide an example of at least five orderd pairs that do not model a function. The domains will be any five integers between 0 and 20. The range will be any five integers between -10 and 10. Yhy does your example not model a function? can not sure 9 Click here to see answer by stanbon(57962)

 Question 342641: What is a function, in your own words? give an example of a function using a variable x and explain how we evaluate a function for a given value of x. Click here to see answer by solver91311(17077)

 Question 342653: find the domain of the function g(x) = 1/x - 3/x+2 Click here to see answer by stanbon(57962)

 Question 342677: Algebra - in and out boxes - in -1 out -1, in 3 out 27, in -2 out -8, in 0 out 0. I know this is simple, but I'm a 60 year old dad trying to help out an adopted daughter and I'm CONFUSED!! Thanks. Click here to see answer by Alan3354(31518)

 Question 342649: find the domain of the function f(x) = 5x to the second power +2x-1... and please explain who you figure this out.. Click here to see answer by Fombitz(13828)

 Question 342655: find the domain of the function: f(s)= the square root of s-1/s-4 Click here to see answer by Fombitz(13828)

 Question 342668: State the domain for each function. a)y=-8 b)y=3x / x(2x+1) c)y=x-1 / x^2+3x+2 d)√9-x^2 < square root is extended i) y=3 / √x^2-36 Click here to see answer by Fombitz(13828)

 Question 342816: Find the equilibrium point of the demand and supply functions D(p)=8060-16p and S(p)=6625+25p. Click here to see answer by Fombitz(13828)

 Question 343026: Function composition: f(x)=4x-3, g(x)=5xsquared-2 and i need the to have the g[f(X)] explained. Thanks! Click here to see answer by solver91311(17077)

 Question 343324: Decide whether the following information defines a function. If it does, state the domain of the function. {(0,0)(1,1)(2,2)(3,-3)} Click here to see answer by haileytucki(390)