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

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Question 343355: find domain and range of
y=sqrt16-25x^2
Click here to see answer by Fombitz(13828)

Question 343585: domain of a constant

Click here to see answer by jim_thompson5910(28593)

Question 343634: Please help me solve this equation: 42.73=-.03t+45.4. I know the answer is 89 but I cannot determine how to get 89. I tried 42.73 times .03+45.4 but that is not correct. I also tried to divide both sides by -.03 but again that does not work.
Click here to see answer by scott8148(6628)

Question 343882: What is the domain of this funtion, {(x,y): |x|=|y| and |y|≤ 2}?
Click here to see answer by Jk22(389)

Question 344145: Need help for Grade 11 functions question:
The function f(x)has the property that f(2x+3)=2f(x)+3 for all x. If f(0)=6, what is the value of f(9)?
Thank you so much!
Click here to see answer by nyc_function(2733)

Question 344340: find domain for y=x+5 if the range is (10,20,30,40)

Click here to see answer by Fombitz(13828)

Question 344103: solve for x if -4x < 12 and x + 4 > -5
Click here to see answer by Fombitz(13828)

Question 344641: how do i write 8x+y-4=0 in function form?
Click here to see answer by crbarnett8(3)

Question 344645: Consider the function g(x)=x2+x-5. Evaluate g(x-2) =
x2 = x to the 2nd power
Click here to see answer by Fombitz(13828)

Question 344623: The relationships in the tables below are functions. Write a function rule for each table.
x y
1 20
2 16
3 12
4 8
Click here to see answer by Jk22(389)

Question 344844: finding the difference quotient
f(x+h)-f(x)/h
g(x)=3sqrt of x

I can set it up but i can't get the right answer
3 sqrt x+h - 3sqrt of x/ h

Click here to see answer by stanbon(57307)

Question 344895: on a map,1 centimeter representsn80 kilometers.how many centimeters represent 280 kilometers
Click here to see answer by stanbon(57307)

Question 344897: Find the domain of the rational functions:
f(x)=3x-8/4x+20
Click here to see answer by stanbon(57307)

Question 344909: Find the LCD
5/x-6,7/x^2-12x+36
Click here to see answer by stanbon(57307)

Question 344910: Find the LCD
5/7ab^5,2/7a^3b^3
Click here to see answer by stanbon(57307)

Question 344907: Perform the indicated operation. When no operation is indicated, simplify the rational expression completely.
10m^4/9a^2*3a^2b
Click here to see answer by stanbon(57307)

Question 344908: Perform the indicated operation.
3x^2-5x/18x-30
Click here to see answer by user_dude2008(1861)

Question 344927: Solve the equation and check the solution if there is no solution say so
5/4x+2=1/x
Click here to see answer by stanbon(57307)

Question 344932: Solve the equation and check the solution if there is no solution say so
4-8x/x+1+8/x+1
Click here to see answer by stanbon(57307)

Question 344942: Solve the equation and check the solution if there is no solution say so
4-8x/x+1=8/x+1
Click here to see answer by Fombitz(13828)

Question 344936: Factor completely
[5.7.1] 2x^2+20x+50
Click here to see answer by Fombitz(13828)

Question 345511: f(x) = 11x - 5x2 + 4
find f(-4)
The more I read how my lesson explains to solve this the more confused I get. If anyone can help explain it I would greatly appreciate it.
Click here to see answer by mananth(12270)

Question 345442: does x+8=y^2 define y as a function of x?
Click here to see answer by Fombitz(13828)

Question 345735: THe perimeter of a rectangle is 210 meters . How do i express the area as a function of the length, and how do I state the domain of the function.
THis is what I have so far
A=L*W
A=X(105-X) 210/2=105
domain is 0
Click here to see answer by solver91311(16877)

Question 345758: Find the indicated outputs forf(x)=2x^2 -5x
f(0)=
f(-1)=
f(2)=
Thanks
Tammy
Click here to see answer by solver91311(16877)

Question 345761: what is y=3x-1? domain 1,2,3,4,5
Click here to see answer by solver91311(16877)

Question 345986: Answer the question and solve the problems below. Make sure you show all your work so you can get partial credit even if you get the final answer wrong.
1. What is a system of equations?
2. Solve for X and Y in the following problems using either substitution or elimination methods. Make sure you show all your work so you can get partial credit even if your final answer is wrong.
a. X + Y = 10 , 3X + Y = 12
b. 2X + 5Y = 19 , 3X + 3Y = 15
c. 4X + Y = 22 , 2X + 3Y = 16
d. 12X + Y = 174 , 8X - 2Y = 36

3. Suppose Bob owns 2,000 shares of Company X and 10,000 shares of Company Y. The total value of Bob's holdings of these two companies is $372,000.
Suppose Frank owns 8,000 shares of Company X and 6,000 shares of Company Y. The total value of Franks holdings of these two companies is $400,000.
a. Write equations for Bob and Frank's holdings. Use the variables X and Y to represent the values of shares of Company X and Company Y.
b. Solve for the value of a share of Company X and Company Y. Show your work so you can get partial credit even if your final answer is wrong.

4. Solve for X, Y, and Z in the following systems of three equations using either substition or elimination methods:
a. X + 2Y + Z = 22
X + Y = 15
3X + Y + Z = 37
b. 10X + Y + Z = 603
8X + 2Y + Z = 603
20X - 10Y - 2Z = -6
c. 22X + 5Y + 7Z = 12
10X + 3Y + 2Z = 5
9X + 2Y + 12Z = 14

Click here to see answer by JBarnum(2044)

Question 346009: find the inverse of following functions:
(a) f(x)=(x^3 + 5)/(x-3) , x≠3

(b)f(x)=(x^3 - 8)/(x^2 - 4) , x≠±2
Click here to see answer by jsmallt9(3296)

Question 346186: what is the domain for the following functions :
(11x+3)/(x-7)

sqr(8x^2) +12

5(x-1)^5/2
Click here to see answer by Fombitz(13828)

Question 346211: Is f(x)=8x^(5/4) even, odd, or neither?
Click here to see answer by edjones(7569)

Question 346271: let g be the function defined by the equation below
g(x) = -x^2+6x

find the following :
g(a+h)
g(-a)
g(sqr(a))
a+g(a)
1/g(a)
Click here to see answer by nyc_function(2733)

Question 346473: 7/x^2-x-6+5/x-3
Click here to see answer by mananth(12270)

Question 346480: -2/ab^2 / 5/a
Click here to see answer by Fombitz(13828)

Question 346483: 1/3y+1/6y / 1/2y+3/4y
Click here to see answer by TiaBearr(3)

Question 346562: Use the following table to …nd the slope and y-intercept of the graph
of g: Explain your reasoning.
x -2 0 3 7
g(x) 3 1 -2 -6
Click here to see answer by Fombitz(13828)

Question 346607: f(x+7)=x²+8x-1
Click here to see answer by Alan3354(30993)

Question 346806: Find the domain of the function.
-9p/p+4
Click here to see answer by haileytucki(390)

Question 346790: j(X)=2x J(0.75)=? J(-4)=-8
Click here to see answer by haileytucki(390)

Question 346933: find the domain of R(x)=-2-5x/x^3-5x^2-6x
Click here to see answer by haileytucki(390)

Question 346933: find the domain of R(x)=-2-5x/x^3-5x^2-6x
Click here to see answer by jsmallt9(3296)

Question 346970: find the domain of the given function h(x)=1/x+9
Click here to see answer by nyc_function(2733)

Question 347110: I am really not understanding how to work this problem
f(x) = 15x - 12
g(x) = -15x2 + 14x - 10
find g(g(7))
Any help would be greatly appreciated!!!
Click here to see answer by stanbon(57307)

Question 347046: Find the domain of the given function:
h(x)=1/x+9
Type your answer in interval notation
Click here to see answer by CharlesG2(828)

Question 347142: If the limit as x approaches 1 is (f(x)-8)/(x-1) = 10
FIND the limit of f(x) as x approaches 1
Click here to see answer by CharlesG2(828)

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