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

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Algebra: Functions, Domain, NOT graphing

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Question 50666This question is from textbook Beginning Algebra

: Given f(x) = 5x + 3, find f(0)This question is from textbook Beginning Algebra

Click here to see answer by rapaljer(3631)

Question 50604: I have a pattern problem that I just cannot figure out. It is an in/out pattern box. I must find a rule/formula that will fit each value in the boxes.
It apears as though -4 must be used in the formula. Here are the #s in the IN box 3, -5, 1/3, 0, 7, -2. The #s in the out box are 5, 21, -3 8/9, -4, 45, 0.
I assume I must come up w/ some multiplier ???? time my number in the in box eqauls my number in the out box. I have worked on this problem for two days and cannot find a number (s) that will work. Thanks for any assistance rendered.
Click here to see answer by stanbon(26367)

Question 50695: If f(x)=X^2+2 and g(x)=2*x-1,
find f(g(1)).
Thanks,
Carolyn
Click here to see answer by venugopalramana(3286)

Question 50724: List the domain for the function {(-2,3), (-1,5), (0,7), (1,9)}.
List the domain for the function f(x) = x2 - 4
Evaluate the function g(x) = x2 - 5x + 2 for x = 1.
For the function f(x) = 3x + 2, find f(x+h).
Click here to see answer by stanbon(26367)

Question 50737This question is from textbook college algebra: An early functions approach
: Help! PAGE 131 #19 Find and simplify the difference quotient: f(x + h) - f(x) -----------------, h does not = 0 h for the given formula: f(x) = 1/x
This question is from textbook college algebra: An early functions approach

Click here to see answer by AnlytcPhil(958)

Question 50808: 6 - 5[8-(2y-4)]
can you help me? I am not sure if the brackets are multiplied or not.
I came up with -54-10y and 8-(2y-4)
Click here to see answer by tutorcecilia(2042)

Question 50808: 6 - 5[8-(2y-4)]
can you help me? I am not sure if the brackets are multiplied or not.
I came up with -54-10y and 8-(2y-4)
Click here to see answer by stanbon(26367)

Question 50842: Find each of the following for the given function
f = {(2,3),(5,1),(8,2),(-2,-4)}
a} f(8)= ___
b) f(__) = 1
c) f(-2)=____
Click here to see answer by stanbon(26367)

Question 50867: please help.
Write the expression
9x^2-9x+1
in the form a(x+b)^2+c, where a, b and c are real numbers.
Click here to see answer by AnlytcPhil(958)

Question 50896: Suppose f(x)= 4x-10.Evaluate each of the following.
1. f(2x) 2. f(n) 3. f(-3y) 4. f(t+1) 5. f(t-1)

6. f(r+2) 7. f(c+10)
Click here to see answer by sinadone(8)

Question 50932: what is the domain of y=sq.root of (9-x^2) i htink the answer may be x is less than or equal to 3 that is what i got when i worked it out
Click here to see answer by stanbon(26367)

Question 50934: 1. Find the equation of the line passing through the point (3,4) that is perpendicular to the line passing through the points (7,9) and (8,1). Put the answer in point slope form.
2. Put the equation from problem 1 in slope-intercept form
3. Put the equation from problem 1 in standard form
4. Find the x and y- intercepts of the line you found in problem 1
Click here to see answer by stanbon(26367)

Question 50948: I can't figure this problem out.
3x-2y if x=-2 and y=-6
Click here to see answer by AnlytcPhil(958)

Question 51030: I can't figure this out
-8(2y-4)=9(4-2y)
Click here to see answer by junior403(76)

Question 51028: I just don't understand these
-2-4(2y-1)=(6-2y)3
Click here to see answer by junior403(76)

Question 51042: Determine whether f(x) = 2x and g(x) = 0.5x are inverses of each other.
a. Yes
b. No
Click here to see answer by stanbon(26367)

Question 51040: If f(x) = (x - 2)^1/3, then f^-1(x) =
a. (x3 + 1)/2
b. (x3 - 1)/2
c. (x3 + 2)/2
d. (x3 - 2)/2
e. x3 - 2
f. x3 + 2
g. none of these
Click here to see answer by stanbon(26367)

Question 51040: If f(x) = (x - 2)^1/3, then f^-1(x) =
a. (x3 + 1)/2
b. (x3 - 1)/2
c. (x3 + 2)/2
d. (x3 - 2)/2
e. x3 - 2
f. x3 + 2
g. none of these
Click here to see answer by Earlsdon(4900)

Question 51041: A strong spring is mounted to a steel I-beam so that the spring hangs vertically. A weight is hung from the spring. The energy P (arbitrary units) stored in the spring is given by P(x) = 2x^2, where x is the distance in inches that the end of the spring is stretched from its equilibrium position. Find P(4).
a. 4 units
b. 16 units
c. 8 units
d. 32 units
Click here to see answer by stanbon(26367)

Question 51022: Please help...
5(x-7)=2(2-2x)-3
Click here to see answer by checkley71(8405)

Question 50971This question is from textbook algebra for college students

: i would like to know how to do step by step
find f(a+h)-f(A)/h
14. F(x) = 4x+5This question is from textbook algebra for college students

Click here to see answer by venugopalramana(3286)

Question 51147: how do you solve this question x/7=6 what does x equals i just don't get it
Click here to see answer by THANApHD(104)

Question 51205: Determine whether the set S = {( –3, 1), (–2, 1), (–1, 0), (0, 1)} defines a function. If it does, then state the domain and range.
a. S does not define a function.
b. S defines a function with domain { –3, –2, –1, 0} and range {0, 1} .
c. S defines a function with domain {0, 1} and range { –3, –2, –1, 0} .
d. S defines a function with domain {( –3, 1), (–2, 1), (–1, 0), (0, 1)} and range { –3, –2, –1, 0} .
Click here to see answer by THANApHD(104)

Question 51202: Determine whether the relation is a function. If it is a function, state its domain and range.
{(–8, 7), (–5, –4), (–3, 3), (–3, 6)}
a. Domain: {7, –4, 3, 6}; Range: {–8, –5, –3}
b. Domain: {–8, –5, –3}; Range: {7, –4,3, 6}
c. Domain: {–8, –5, –3}; Range: 11
d. The relation is not a function.
Click here to see answer by jaime leigh(1)

Question 51184: If f(x) = 7x^5 - 3, then f ^-1(x) =
a. [(x + 7)/5]1/3
b. [(x + 3)/5]1/7
c. [(x + 5)/7]1/3
d. [(x + 7)/3]1/5
e. [(x + 3)/7]1/5
f. [(x + 5)/3]1/7
g. none of these
Click here to see answer by rapaljer(3631)

Question 51241This question is from textbook
:

Let S = the solution set for x² = 16.

and T=the solution set for x+2 = 16.

List the elements of each set. 

a.S Ç T b. S È TThis question is from textbook 



Click here to see answer by AnlytcPhil(958)

Question 51251: f(x)=1/x-2
g(x)= 4/x
(fog)(x)
(gof)(x)
please can you show me how to do this problem?
Click here to see answer by venugopalramana(3286)

Question 51266: s=3t+1
find the range of the function if the domain is {-3,0,3}
Click here to see answer by AnlytcPhil(958)

Question 51259: State the domain and range of f^-1 (x) given
a) f(x)= x+3
This is what I have tried so far:) I found the inverse of the question I think this is right.
y=x+3
x=y+3
x-y=3
-y=3-x
y=x-3
f^-1(x) = x-3 now I know I have to find the domain and range of f^1(x) =x-3 but I am extremely confused on how to do this I know x value is domain and y is range. Can you please help me find the correct answer.
Click here to see answer by Nate(3495)

Question 51260: State the domain and range of f^-1 (x), given
f(x)=(x-1)^2 +2 ** Please note their should be brackets around x-1 part** I'm not sure if the brackets will show up for you.
This is what I have tried so far. I tried to find the inverse I am not sure if i am right.
f(x)= (x-1)^2+2
y=(x-1)^2+2
(y-1)^2=x-2
y-1= +/- Square root x-2
y= +/- square root x-2+1
f^-1 (x) = +/- square root x-2+1
Now I think I have to find the domain and range of this f^-1 (x) = +/- square root x-2+1. I am not sure how to do this. Can you please check my work and see if it is ok so far and help me find the domain and range and if I have made a mistake can you help me correct it. Thank-you so much.

Click here to see answer by Nate(3495)

Question 51282: For the functions f(x) = 4x^2 - 4
and g(x) = -8x^2 + 4,
find f(g(-3)).
Click here to see answer by Nate(3495)

Question 51294This question is from textbook Prentice Hall Algebra

: The weight of two books equals 39 pens. What is the answer.This question is from textbook Prentice Hall Algebra

Click here to see answer by mathchemprofessor(65)

Question 51311: i need help in that question. y=-2x+5. the topic is use function notation to write an equivalent equation
Click here to see answer by rapaljer(3631)

Question 51312: For the functions f(x) = 4x + 7 and g(x) = -9x + 11,
find f(g(0)).
For the functions f(x) = 3x2 - 7
and g(x) = -3x2 + 4,
find f(g(2)).
For the functions f(x) = 3x2 - 7
and g(x) = -3x2 + 8,
find g(f((-4)).
For the functions f(x) = 3x2 - 8
and g(x) = -7x2 + 5,
find g(f((-4)).

Click here to see answer by THANApHD(104)

Question 51384: state the domain of:
G(x)=(x^2-x-6)^(1/2)
Click here to see answer by stanbon(26367)

Question 51335: Given the functions and . Find each of the following:

g(-4)
f(-4)
f(5 + h) - f(5)
Click here to see answer by rchill(405)

Question 51221This question is from textbook
: Here is the problem: 5t+6+3(t+2)
I need to find the Communitive, Distributive, Addition, and Identity of this equation.
Here are my answers: (5t+6+3t+6)
Communitive: 5t+3t+6+6
Distributive: 8t+12
Is this correct? This question is from textbook

Click here to see answer by venugopalramana(3286)

Question 51434: does th input-ouput table represent a function? If it does represent a function list the domain and range. If it does not represent a function explain why.
input 2 3 4 5
output1 5 9 13
Click here to see answer by music974(43)

Question 51626: Hi Could you please explain the steps of how to solve this problem for me? It would be greatly appericated... The x is suppose to be over 5 like a fraction but I can't type it as a fraction.
-22=x - 7
5
Click here to see answer by checkley71(8405)

Question 51632This question is from textbook College Algebra
: In 1988 the world's tropical moist forest covered approximately 1056 million hectares (1 hectare=10,000 m squared). In 2004 the world's tropical moist forest covered approximately 896 million hectares. What was the average rate of change of the area of tropical moist forest over those 16 years?This question is from textbook College Algebra

Click here to see answer by checkley71(8405)

Question 51637This question is from textbook
: I have been having trouble on this problem for a while, i think i know the answer but i need to be sure.
What values are excluded from the domain of the function?

Thank you, hope to hear from you soon!

Sincerely,
matthew o'neillThis question is from textbook

Click here to see answer by rchill(405)

Question 51652: How do you determine the (2,2), (1,4), (3,6), (-1,2) are function, domain or range?
Click here to see answer by THANApHD(104)

Question 51677: how do you find f(x)=ax+b in which f(2)=1 and f(-3(=11?
from mathematics for the international student:Mathematics SL-section 1c
Click here to see answer by alka001(14)

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