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

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Question 336099: Hi - function question....
There is the function g(x) = K(x+3)(x-3) for some constant K.
If g(a-1.2) = 0 and a>0, what is the value of a?
thank you - we are at a loss....
Fiona
Click here to see answer by Earlsdon(6294)

Question 336288: A sales tax on an item is 5%. Express the total cost, C, in terms of the price of the item, P.
Please and thank you!!
Click here to see answer by kshlak(4)

Question 336292: what is the domain for the functioxn, f(x)= 3x+7?
Click here to see answer by jim_thompson5910(35256)

Question 336293: How do I find the range of this function : g(x) = 5+ √4-x
Click here to see answer by galactus(183)

Question 336297: If 15 is a solution of the equation f(w)=7, give a point on the graph of f.
Click here to see answer by user_dude2008(1862)

Question 336396: A chemical company spends $2.2 million to buy machinery before it starts producing chemicals. Then it spends $0.5 million on raw materials for each million liters of chemical produced.
Find a formula that expresses the total cost, C, in millions of dollars, as a function of L, the number of million liters produced.
Click here to see answer by stanbon(75887)

Question 336510: finding the difference quotient f(t)= 1/t, f(t)-f(1)/t-1
Click here to see answer by Fombitz(32388)

Question 336537: express the perimeter P of a rectangle as a function of the width w if the length of the rectangle is twice its width
Click here to see answer by user_dude2008(1862)

Question 336537: express the perimeter P of a rectangle as a function of the width w if the length of the rectangle is twice its width
Click here to see answer by Fombitz(32388)

Question 336688: Find the domain of each of the following functions.
Then express your answer in interval notation.
f(x)= 3x+1
___________________________________
(x)2 {to the power of 2} +4
Click here to see answer by solver91311(24713)

Question 336764: I am working on finding the equation of a circle, but it's kind of confusing. Can you explain it to me?
My current problem is the center of the circle is (6,-5) and it passes through (1,7) I have to find the algebraic equation for the circle.
Click here to see answer by Fombitz(32388)

Question 337177: find (f*g)(-4) and (g*f)(-4)
f(x)=-2x-1; g(x)=(x^2)+5

Click here to see answer by Edwin McCravy(20054)

Question 337193: Given the relation {(x,y): [x] + [y] = 1} where x and y are integers.
A. Find the domain of the relation.
B. Is the relation a function?
Click here to see answer by Fombitz(32388)

Question 336932: for a table of data, determine if it is a funcion, identify the independent and dependent variable, and state the domain and range.
Click here to see answer by Fombitz(32388)

Question 337208: Find the domain of the function:
f(x)= 5x+4/x^2+3x+2
I know that the denominator can't be 0, so would I set x^2+3x+2 greater than 0?
Click here to see answer by Fombitz(32388)

Question 337305: h(x)=sqrt(x) + 13
Click here to see answer by Alan3354(69443)

Question 337410: For each function, find f(-2), f(-1/2), f(3), and f(7)
f(x) = 5x+2 is the first one... I don't even understand what they are asking me to do... or begin to know how to start...
Click here to see answer by Edwin McCravy(20054)

Question 337453: I just started algebra 1 this year so Im a bit confused on the homework and I needed help...
How do you set up a Domain and a Range? Or, In other words... What numbers do you use and where do they go? Thank you if you can answer my question...
Kim D.
Click here to see answer by stanbon(75887)

Question 337438: find the domain of the function g(y)=the square root of y-10
Click here to see answer by solver91311(24713)

Question 337492: domain of (4x+1)/(x^2-36)
Click here to see answer by stanbon(75887)

Question 337437: Express the domain of f(x) in interval notation.
f(x)=(x+3)/((-9-x)^3)
Click here to see answer by Fombitz(32388)

Question 337532: If the function (f)=x^2-x has d = {-1,0,1}, find the range
Click here to see answer by jim_thompson5910(35256)

Question 337537: What is the domain and the range of the graphed function? (it is a squiggly line beginning at -2 and ending at +3
Click here to see answer by Fombitz(32388)

Question 337657: f(x)=7x+4 how to solve?!
Click here to see answer by Fombitz(32388)

Question 337844: Okay i have this work sheet in honors alg 2.
You match the letters too the numbers.
But if someone cud just explain too me how too do it that would be great.
1. f(x)=1/x-1
2. f(x)=1/x^2-1
3. f(x)=Square root 3x
4. f(x)= 1/square root 2x
there is just a few. If you can help ill post more.
Thanks
Click here to see answer by solver91311(24713)

Question 337937: f(x)= -8/(x^2-36)
What is the domain?
Click here to see answer by katealdridge(100)

Question 337964: x=-1/5x-4 and x is not equal to what?
Click here to see answer by jim_thompson5910(35256)

Question 338324: how do you solve y=21-2x while using an input-output table.DOMAIN=0,1,2,3
Click here to see answer by solver91311(24713)

Question 338320: (1,1)
(2,3)
(3,7)
(4,15)
(5,31)
(6,63)
(7,127)
(8,255)
(9,511)
(10,1023)
What is the equation?
Click here to see answer by solver91311(24713)

Question 338399: I don't know how to explain to my child how to get this.
c-5=4
Click here to see answer by backback(24)

Question 338399: I don't know how to explain to my child how to get this.
c-5=4
Click here to see answer by jim_thompson5910(35256)

Question 338420: I don't know how to explain to my child how to get this.

Click here to see answer by Edwin McCravy(20054)

Question 338500: find the domain of f if f(x)=x-2/x-5

Click here to see answer by fractalier(6550)

Question 338707: What is an inverse function of f(x) = 3^x
(^ meaning raise to power)
Click here to see answer by Fombitz(32388)

Question 338771: what is the domain of radical(x(x-3))? And what is the domain of 1/radical(15x+5)?
Click here to see answer by jim_thompson5910(35256)

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(32388)

Question 339139: what is the domain of x+3/x cubed 25x?

Click here to see answer by Fombitz(32388)

Question 339399: How do I find the indicated values for the function f(x)= √2x-10 ?

Click here to see answer by Fombitz(32388)

Question 339840: Find the domain of the function.
g(x)=6/1-8x
Click here to see answer by solver91311(24713)

Question 339910: p(x)=x2-2x+8. what is the domain of p
Click here to see answer by jim_thompson5910(35256)

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(19441)

Question 340254: Please help me solve
y= -1/3x domain (-3, 0, 2,6,8)
Click here to see answer by jim_thompson5910(35256)

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(32388)

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