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

Tutors Answer Your Questions about Functions (FREE)

Question 391351: How do I solve for 2x=6y-3? I am confused.
Click here to see answer by Alan3354(69443)

Question 391350: We cannot find anything to help us understand a & h in Algebra II. One of the problems we have is: find g(a+h)-g(a)=
Click here to see answer by Alan3354(69443)

Question 391644: If f(x)= 3x - 2, find f(8) - f(-5)
Click here to see answer by robertb(5830)

Question 391726: I have two questions on two math problems.
1. f(x)=x+5
2. f(4)=8x+2
If you could help me solve these that would really help me out. Thank you.
Click here to see answer by stanbon(75887)

Question 391810: Find the indicated vaules for the function
f(3)=4x-7
Click here to see answer by jim_thompson5910(35256)

Question 391842: y= x -2x�-8
Determine the zeros of your function. Give an algebraic reason for the existence or non-existence of real-valued zeros of your quadratic function.
Click here to see answer by richard1234(7193)

Question 391843: 3x + 15
x + 5

Click here to see answer by Alan3354(69443)

Question 392143: Hello, my name is Sandra and I having trouble with Linear Equation Applications and I need your help with the below word problem. I think I know the answer to problems 1-3 and I will put them in for you and let me know if I am correct. Thank you...
The Smith family is taking a summer vacation in their motor home. During their trip, they maintain a constant speed of 65 mph along the highway.
The distance traveled by the Smith�s and the time t, in hours, they have traveled is given by the function D(t) = rt.

1. Which variable in the function D(t) = rt represents the constant speed the Smith�s maintain on their trip? R
2. Which variable in the function represents the range or how far the Smith�s have traveled? D
3. Which variable in the function represents the domain or how long the Smith�s have been driving? T
4. Create a specific function based on the given information. (Hint: For which variable do you have a value and can replace in the given function?)
5. Use the function you created to find the following:
D(4)=
D(8) =
D(10)=
I have to show all of the work and explain what the answers mean in the context of this problem.

Click here to see answer by mananth(16946)

Question 392180: Find the domain of the function:
p(x)=x^2-2x+5
What is the domain of p?
a) {x|x is a real number}
b) {x|x is a real number and x≠0}
c) {x|x is a real number and x≠5}
d) {x|x is a real number and x>0}
Click here to see answer by ewatrrr(24785)

Question 392331: What is the domain of f(x) = x^4 - 10x^2 + 9
Click here to see answer by MathLover1(20849)

Question 392460: I'm not even sure if this is the right topic! How do you solve the following problem:
x#y = 6x + 6y. Find -1#4 and find 4#-1
Click here to see answer by richard1234(7193)

Question 392620: x -1 0 1

f(x) 1/8 1/2 2

The table above shows some values for the function f.If f(x)=ka^x for some constants k and a,what is the value of a?
A)1/2 B) 1/4 C) 2 D) 4 E) 16

Click here to see answer by ewatrrr(24785)

Question 392727: If the function G(x) = (x - 7)2 + 3 has the same shape as F(x) = x2 + 3, how far to the right of F(x) is G(x) shifted?

Click here to see answer by stanbon(75887)

Question 392727: If the function G(x) = (x - 7)2 + 3 has the same shape as F(x) = x2 + 3, how far to the right of F(x) is G(x) shifted?

Click here to see answer by ewatrrr(24785)

Question 392952: My question says:
Graph the function. Is the domain discrete or continuous?
Input
Length, x (inches)
2
4
6
Output
Area, y (square inches)
12
24
36
Then It has a graph.
I dont know what to do.
Click here to see answer by robertb(5830)

Question 392959: a(x)=5x-1
Give the domain of each function. Is it all numbers except 0?
Click here to see answer by robertb(5830)

Question 392959: a(x)=5x-1
Give the domain of each function. Is it all numbers except 0?
Click here to see answer by jim_thompson5910(35256)

Question 392957: MOTHER FUCKER

Click here to see answer by Fombitz(32388)

Question 392957: MOTHER FUCKER

Click here to see answer by Dkstrike(1)

Question 393035: Explain. -3y+4=-1
Click here to see answer by rfer(16322)

Question 393134: For Each of the following, determine whether the equation defines "y" as a function of "x".
x^2+|y|=9
3x=y^2
y=|x+8|
x^2+8y=8
Click here to see answer by Edwin McCravy(20054)

Question 393212: Provide an example of at least five ordered pairs that do not model a function.

The domain will be any five integers between 0 and 20. The range will be any five integers between -10 and 10.

Your example must not be the same as those of other students or the textbook.

Why does your example not model a function?

Click here to see answer by Edwin McCravy(20054)

Question 393631: f(x)= | 3x-17 |
for the function defined above, what is one possible value of a for which f(a)< a ?
Click here to see answer by robertb(5830)

Question 393912: Hi, I need help to solve this equation: For f(y)=10y-20 find f(-3)
Click here to see answer by rfer(16322)

Question 393945: Question: If you rent a power tool for 4 hours the cost is $14 If you rent it for 6 hours cost is $19.5. our teacher set the equation up like this One I am not understanding the equation and two with this equation I can not figure out this question The number of hours rented if you pay $36. Thank you for your help
Click here to see answer by scott8148(6628)

Question 394026: What does 'find the value of x to that the function has the given value' mean?
Click here to see answer by robertb(5830)

Question 394041: Write an equation for each relation. The relation is

{(1,2), (2,4), (3,8), (4, 16), (5, 32)}
Click here to see answer by robertb(5830)

Question 393648: How do you tell wether a function is not a function without a graph?
Click here to see answer by pie90010(44)

Question 394238: what is the domain of : Square root x(x-7)
Click here to see answer by ewatrrr(24785)

Question 394313: find f+x, f-x, fx, and f/x
f(x)= 5/x+4
g(x)= 1/x
Thank you to the person who responds!
Click here to see answer by schmit95(1)

Question 394313: find f+x, f-x, fx, and f/x
f(x)= 5/x+4
g(x)= 1/x
Thank you to the person who responds!
Click here to see answer by richard1234(7193)

Question 394311: Please help! I have to find the following:
f+g
f-g
fg
f/g
f(x)= 6-1/x
g(x)= 1/x
Please help! Are they asking me to solve for "x"? I would be grateful if someone could show me the steps to this! thx!
Click here to see answer by MathLover1(20849)

Question 394407: the function y=rx describes the distance y in milesyou can walk in x hours, where r is you rate in miles per hour. r=1.4
How do i rewrite this function using my rate 1.4?
Click here to see answer by richard1234(7193)

Question 394779: what is the domain:
squareroot of 5-x /X^2+8X-9
Click here to see answer by stanbon(75887)

Question 394778: what is the domain:
6/-4x+5
Click here to see answer by stanbon(75887)

Question 394857: what is the domain of the function:
squareroot(5-X)/(x^2+8x-9)
Click here to see answer by stanbon(75887)

Question 394871: Suppose you are given the two functions f(x)=4sqrt(x)+2 g(x)=x^2+3
Determine the expression g*f(x) = g(f(x))
Click here to see answer by edjones(8007)

Question 394945: f(-5)
Click here to see answer by Alan3354(69443)

Question 395007: 1 Write the area of a square, A, as a function of its side, x.
Click here to see answer by ewatrrr(24785)

Question 395012: 7- Express the distance d traveled at 50 mi/h as a function of t (in hours).
Click here to see answer by Alan3354(69443)

Question 395009: 6- The cost of running a manufacturing plant is $10,000 per day plus $20 for each unit produced. Write the daily cost C as a function of x, the number of units produced.
Click here to see answer by ewatrrr(24785)

Question 395032: Find the difference quotient f(x+h)-f(x)/h, where h cannot be equal to 0 , for the function below.
f(x)=2x^2-x

Simplify your answer as much as possible
Click here to see answer by stanbon(75887)

Question 394207: A certain function f has the property that f(x + y) = f(x) + f(y) for all values of x and y . which of the following statements must be true when a = b ?
I f(a + b) = 2 f(a)
II f(a + b) = [f(a)]^2
III f(b)+ f(b) = f(2a)
(A) none
(B) I only
(C) I and III only
(D) II and III only
(E) I II, and III

Click here to see answer by robertb(5830)

Question 395204: determine whether f(x) = (x^2)/((x^2)-4) is continuous or not at x=2. give your reason
Click here to see answer by robertb(5830)

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