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

Tutors Answer Your Questions about Functions (FREE)

Question 215855:
Click here to see answer by Earlsdon(6294)

Question 215888: Roberta is a commissioned salesperson. She earns a base weekly salary of $250 per week plus 15%�of the sales price of items sold. Express her gross salary G as a function of the price p of items sold. Determine the weekly gross salary of Roberta if the value of items sold is $10,000. That is, find G(10,000).
Click here to see answer by rfer(16322)

Question 215884: If f(x)=2x+5/x-a and f(0)=-1,what is the value of a.
Click here to see answer by Theo(13342)

Question 215905: A company has costs and revenue functions, in dollars given by C(q)=4000 + 10q and R(q)=30q
What is the break-even point?

I know what the answer is...its 200. But I cant figure out at all how they got that. Can you please help explain?
Thanks, Mike
Click here to see answer by nerdybill(7384)

Question 215996: n+4
Click here to see answer by Alan3354(69443)

Question 216068: hi
can you help me with my math home work?
Click here to see answer by Alan3354(69443)

Question 216194: How do you solve this function problem?
h(f(g(1/2)))
Let f(x)= square root of x
let g(x)=6x-3
let h(x)=x/3
Click here to see answer by jim_thompson5910(35256)

Question 216206: My coordinates are typed into the program window on my ti83, but there are some problems with the resulting picture such as lines not connecting, and some lines are longer and shorter than they need to be. I have checked my coordinates and my algebra many times, but nothing has changed, and everything looks correct on paper. Is there something wrong with my math that I have not yet seen or is it something wrong with my calculator?
Click here to see answer by jim_thompson5910(35256)

Question 216360: how would you solve 4x one half +x+3
Click here to see answer by bob123132(33)

Question 216391: what do u do with a single number in Parentheses like this (7)=70 how would u solve that problem
Click here to see answer by bob123132(33)

Question 216484: Having trouble finding the rule -
input (x) 1 2 3 4 5 6
output (y) 8 14 ? 24 28 ?
Everything I try breaks down halfway through! Any ideas??
Click here to see answer by solver91311(24713)

Question 216335: let f(x)=2x^2+3x-5 g(x)=4 solve for fog and gof
Click here to see answer by jsmallt9(3758)

Question 216723: I need help in algebra in functions and notation.Solve G(x) for the given domain. G(x)=3x exponent 2-2x-1.
G(a+b)=

Please help me with this algebra and explain to me how to find the answers.Thank you for your time.
Click here to see answer by stanbon(75887)

Question 216871: i dont really know how to solve this problwm how do i do it ?
(f-g)
f=3x+4
g=3x-3
i need tofind the domain and whats the function

Click here to see answer by stanbon(75887)

Question 216931: given the function f(x)=-x^2+2x-3
find f(2)-2*f(0)
Click here to see answer by Earlsdon(6294)

Question 216931: given the function f(x)=-x^2+2x-3
find f(2)-2*f(0)
Click here to see answer by MathTherapy(10552)

Question 217234: how do you get the answer too make the equation so that y is a function of x
Click here to see answer by rfer(16322)

Question 217262: g(x)=(x-5)/(x^2-36) . Find the domain. I know its not (-inf,inf)
Click here to see answer by drj(1380)

Question 217008: Please help me solve understand the steps to solve this equation: If g(x) =3x^2 -4x+1, waht is the value of g(-2). Thank you

Click here to see answer by chibisan(131)

Question 217442: y=5x-2
Click here to see answer by ichudov(507)

Question 217482: find the distance between P(-8,4) and Q(3,-2).

Click here to see answer by RAY100(1637)

Question 217859: if f(x)=6x+7
f(r-2)
i dont know how to plug in the numbers??
Click here to see answer by checkley77(12844)

Question 217979: 4-(-1)/-3
Click here to see answer by stanbon(75887)

Question 218116: What is the domain of f(x)=3x-7/2x+5

Click here to see answer by RAY100(1637)

Question 218172: I need help finding the equation of the upper half of the circle and the domain.

I am particularly having trouble finding the domain.
Thank you in advance.

Click here to see answer by Theo(13342)

Question 218229: what is the domain of x+20/x^2-144?
Click here to see answer by stanbon(75887)

Question 218314: For the given functions f and g , find the indicated composition.
f(x) = 4x + 12, g(x) = 4x - 1
(f,g)(x)
Click here to see answer by RAY100(1637)

Question 218314: For the given functions f and g , find the indicated composition.
f(x) = 4x + 12, g(x) = 4x - 1
(f,g)(x)
Click here to see answer by drj(1380)

Question 218314: For the given functions f and g , find the indicated composition.
f(x) = 4x + 12, g(x) = 4x - 1
(f,g)(x)
Click here to see answer by solver91311(24713)

Question 218313: For the given functions f and g , find the indicated composition.
f(x) = -6x + 7, g(x) = 3x + 2
(g,f)(x)
Click here to see answer by drj(1380)

Question 218310: Suppose the point (2, 4) is on the graph of y = f(x). Find a point on the graph of the given function.
f(x) + 8

Click here to see answer by RAY100(1637)

Question 218311: For the given functions f and g , find the indicated composition.
f(x) = 7xsquared - 5x, g(x) = 17x - 4
(f,g)(6)
Click here to see answer by drj(1380)

Question 218301: Find the value for the function.
Find f(2) when f(x) = xsquared - 4x + 2.
Click here to see answer by drj(1380)

Question 218337: Find the value for the function.
Find f(-x) when f(x) = 2xsquared - 5x + 4.
Click here to see answer by jim_thompson5910(35256)

Question 218300: find the value for the function
find f(-x) when f(x)= 2x squared - 5x + 4
Click here to see answer by user_dude2008(1862)

Question 218261: how to decide whether the relation defines y as a function of x and give the domain for y=x2?
Click here to see answer by jim_thompson5910(35256)

Question 218435: if f(x)=3x-5 and g(x)=x-9 which expression is equivalent to (fog)(x)

Click here to see answer by tmyrs17(1)

Question 218473: carol notices that the number of customers who visit her coffee shop varies inversely with the average daily temperature. yesturday the average temperature was 40 degrees and she had 160 customers. if today's average temperature is 25 degrees how many customers should she expect?
Click here to see answer by Earlsdon(6294)

Question 218712: sketch the graph of f(x)=(x-3)(x+2)(x+5) using the zeros and end behaviours.
Click here to see answer by rapaljer(4671)

Question 218727: 6(a+10)
Click here to see answer by rapaljer(4671)

Question 218727: 6(a+10)
Click here to see answer by MathTherapy(10552)

Question 218956: using function: f(x) = 3x -5
what does f(x+4)=
Click here to see answer by checkley77(12844)

Question 218951: using the function: f(x) = 3x - 5
what is f(2)
Click here to see answer by checkley77(12844)

Question 218991: rewrite the equation so that Y is a function of X:
4x-3(y-2)=15+y
Click here to see answer by checkley77(12844)

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