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

Tutors Answer Your Questions about Functions (FREE)

Question 645441: Solve (a/x)-(y/b)=3 for x.
Click here to see answer by sachi(548)

Question 645721: What is the inverse of ? I have tried about 10 different routes of solving but cannot get the exact right answer. I have narrowed it down to . Working backward, I don't even understand how an inverse function could be solved to get an original function like that.
Click here to see answer by solver91311(24713)

Question 645777: find the domain of the function:
g(x)=20 - 5x^2

Click here to see answer by MathLover1(20849)

Question 645754: Use the given zero to find the remaining zeros of the function. f(x)=x^3-9x^2+36x-324; zero 6i
Click here to see answer by stanbon(75887)

Question 645795:
Your grandmother made 360 oz of jelly. She
had two types of jars, holding 10 oz and 12 oz,
respectively.
Let x =number of 10-oz jars and
y =number of 12-oz jars.
Write an equation that represents the dif-
ferent numbers of 10-oz jars and 12-oz jars
that will just hold all of the jelly.
1. 10x + 10y = 360
2. 10x + 12y = 10(360)
3. None of these
4. 10x + 12y = 360
5. x + y = 360
6. 12x + 10y = 360
Click here to see answer by stanbon(75887)

Question 646229: What is the function rule for this function table:
Input. 0,4,8,12
Output 5,7,9,11
Click here to see answer by stanbon(75887)

Question 646229: What is the function rule for this function table:
Input. 0,4,8,12
Output 5,7,9,11
Click here to see answer by solver91311(24713)

Question 646377: Can you help me solve f(x)= f o g o h where f(x)= square root of 2x-2
Click here to see answer by solver91311(24713)

Question 646621: Please help me to find the range of this function: .
Click here to see answer by lynnlo(4176)

Question 646693: solve one to one functions state the domain and range
f(x)= -5y/x+7

Click here to see answer by MathLover1(20849)

Question 646737: Which of the following is the equation of the horizontal asymptote of the graph of f(x) = 4x + 1?
Which of the following is the equation of the horizontal asymptote of the graph of f(x) = 7x + 3 - 8?
Click here to see answer by Edwin McCravy(20054)

Question 646743: what is the domain of (5-x)^(1/6)
Click here to see answer by Edwin McCravy(20054)

Question 647171: Find f composed of g composed of h.
f(x) = x + 1, g(x) = 5x, h(x) = x − 8
Click here to see answer by stanbon(75887)

Question 647171: Find f composed of g composed of h.
f(x) = x + 1, g(x) = 5x, h(x) = x − 8
Click here to see answer by Edwin McCravy(20054)

Question 647245: what would be the answer to
input output
15 1
35 5
20 2
10 0
Click here to see answer by aaronwiz(69)

Question 647432: State the domain of f(g(X)) for f(x)=1/(x-12) and g(x)=x+3. Thanks!
Click here to see answer by MathLover1(20849)

Question 647422: how do i find the range for the following function?
f(x)=10x-73
Thanks!!!!

Click here to see answer by MathLover1(20849)

Question 647791: Find the vertex of the parabola represented by the equation y=-2x^2+24x-100
Click here to see answer by Algebraic(50)

Question 647816: 12. What is the domain and range?
Click here to see answer by Algebraic(50)

Question 648216: How do I find the domain for this function?
-15 / (x+3)(x-7)
thanks!
I really appreciate it!
Click here to see answer by Algebraic(50)

Question 648410: x f(x)
0 20
2 18
4 16
8 12
Write a function rule for each table.
Im confused because i dont know how to figure out the equation. I know it starts as f(x)=________ but i dont know how to solve it. Pls help
Click here to see answer by Alan3354(69443)

Question 648474: You are making balloon bunches to attach to tables for a party.
You are using 8 balloons in each bunch, write a rule for the function for the total number of balloons used as a function of the numbers of the bunches created.
Identify the independent and the dependent variables. How many ballons will you use if you make ten bunches

Click here to see answer by lynnlo(4176)

Question 648475: You are making balloon bunches to attach to tables for a party.
You are using 8 balloons in each bunch, write a rule for the function for the total number of balloons used as a function of the numbers of the bunches created.
Identify the independent and the dependent variables. How many ballons will you use if you make ten bunches/

Click here to see answer by lynnlo(4176)

Question 648567: find (fog)(x)and the domain of fog
when f(x)=3x=5/2, g(x)=2x-5/3
Click here to see answer by stanbon(75887)

Question 648631: What is the domain of y=2x+9
Click here to see answer by jim_thompson5910(35256)

Question 648770: (-2/3x)-12=0 (Find the zero of the function)
Click here to see answer by radh(108)

Question 648847: What type of function is ((( y=2^2 )))
Click here to see answer by stanbon(75887)

Question 648852: Given f(x)=2x-1 and g(x)= 1/2x^2 find each function. The 2x^2 is all the denominator.
Click here to see answer by stanbon(75887)

Question 648852: Given f(x)=2x-1 and g(x)= 1/2x^2 find each function. The 2x^2 is all the denominator.
Click here to see answer by jessjenk10(1)

Question 648855: If f(x)= 2(x-1)^2+3x find f(a+1)
Click here to see answer by stanbon(75887)

Question 648859: Please help me solve this equation: If f(x)=2x-1 and g(x)=rx, then the domain of (fog)(x) is?
Click here to see answer by stanbon(75887)

Question 649020: Find the domain of the function
f(x)=^4 the square root of x^3
Click here to see answer by Alan3354(69443)

Question 649077: Given the function g(x)= 7x-6. What is the range when the domain is (0,2,4,6)
Click here to see answer by MathLover1(20849)

Question 649934: Okay, so I have a word problem that I have to write an equation for. Then I have to write a paper walking another classmate through how to do the problem. I've come up with an equation, but it doesn't fit the standard model for linear equations, which worries me.
Here's the word problem:
In order to build a house, a 15,300 gallon lake must be drained. Water can be drained from the lake at a
rate of 35 gallons per minute.
So I identified my variables,
water - independent variable - g - gallons
time - dependent variable - m - minutes
After staring at it for forever, I could only think that the problem is easily solved by dividing 15,300 by 35.
So my equation is:
m= 15,300/35
Which would make the horizontal intercept 437.14, meaning the lake could be drained completely in 437.14 minutes.
IT SEEMS WAY TOO SIMPLE! Am I doing this problem right?

Click here to see answer by Alan3354(69443)

Question 649450: A flag is raised while an onlooker watches from a distance of 17 feet away from the base of the flag pole. The flag rises vertically at a rate of 5 inches per second. Let t denote the time (in seconds) after the flag begins to rise (For simplicity, assume that when the flag begins to rise it is 0 inches above the ground). Express the distance d (in feet) between the flag and the onlooker as a function of t.
I have attempted this several times using the pythagorean theorem, but I I have not gotten the correct answer. Please help!
Click here to see answer by ankor@dixie-net.com(22740)

Question 650132: If f(x)=5x-9 find x if f(x)=16
Click here to see answer by MathLover1(20849)

Question 650142: If f(x)=(x+1)/(x-1) find f of f and domain/ range

Click here to see answer by sheldonbbtrocks(115)

Question 650189: Find the average rate of change of the function from x1 to x2.
f(x) = 5x + 7 from x1 = -1 to x2 = 0
Click here to see answer by ewatrrr(24785)

Question 650201: Evaluate the piecewise function at the given value of the independent variable:
f(x) = { x-1 if x>5
{-(x-1) if x<(or equal)5 ; f(5)
I'm not sure how I go about this..

Click here to see answer by jim_thompson5910(35256)

Question 650207: Use the graph to find the indicated function value.
y = f(x). Find f(-3)
https://angel.spcollege.edu/AngelUploads/QuestionData/2de6fdb6-6818-4431-b07f-1da62a002fbe/5653156556333722546R.jpg
Click here to see answer by ewatrrr(24785)

Question 650337: you will pay jane $0.01 on May 1st, 0.02 on may 2nd, 0.04 on may 4th and so forth until may 20th.
write a rule for the amount of money you pay Jane each day?
Click here to see answer by solver91311(24713)

Question 650759: ((x^2(1+x^2)^(1/2))-(x^2(1+x^2)^(-1/2)))/(1+x^2)
What is the domain of the question above? and also would you be kind enough to show me the steps?
Click here to see answer by MathLover1(20849)

Question 650846: g(x)=2x^2-1
what is g(x+h)-g(x)
Click here to see answer by stanbon(75887)

Question 650849: find the zeros of g(x)=1-3x
Click here to see answer by jim_thompson5910(35256)

Question 651123: Suppose V(r) = 4/3(pi)r^3 and p(t)= V(3t). Evaluate and simplify p(3)
Click here to see answer by stanbon(75887)

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