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

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Question 49170: How would you factor these four problems:
1) x2- 64
2)x4-y4
3)x2-7X+10
4)2X2- 5x-3
Click here to see answer by Nate(3500)

Question 49168: 3/7(14x-21)=1/2(6x+40) Please Answer as quick as you can. I get some but not all.
Click here to see answer by tutorcecilia(2152)

Question 49176: I have a question: how do u solve the ones below?
1) x^2+7x+10
2) 2x^2-50
Click here to see answer by tutorcecilia(2152)

Question 49120: if f(x)=4x-3 find the following f(-1)
Click here to see answer by Nate(3500)

Question 49087: 56/6+2/1=7 Insert paranthesis to make the answer equal zero
Click here to see answer by josmiceli(9697)

Question 49247: How do you solve this expression:
if f(x+5)=f(x)+5, and f(5)=10 then f(50)= ?
Click here to see answer by venugopalramana(3286)

Question 49245: if x=5 and y=3, then 4x-2y=?
Click here to see answer by TheAntiheroX9(4)

Question 49189: Please help me solve this equation: h(x)=x^2+5x-6/x+3
H(2a)
Click here to see answer by Nate(3500)

Question 49243: (10x15)+(6x+25)=180
Click here to see answer by ikdeep(226)

Question 49329: I am running out of time to finish my summer work, and yet I still do not know how to solve these problems:

"What values are excluded from the domain of the function?"

f(x)= 1/x-1 (one over x minus one)

another is f(x)= 3x+2

A friend of mine who is doing the same work told me to plug 0 in for x, but I am still not sure.
Click here to see answer by jake_6233(74)

Question 49332: Could someone please tell me why function notations might be important. the reasons for function notation?
Click here to see answer by jake_6233(74)

Question 49234: i need help with number 2 which is 4(8-2
______
3+9
Click here to see answer by tutorcecilia(2152)

Question 49403: a mechanic charges a diagnostic fee of $ 35, plus $42.50 per hour for labor. If ur bill on ur car repair was $268.75 without parts, how many hours did the mechanic work on ur car?
Click here to see answer by Nate(3500)

Question 49599: 3a/4 + 7/6 = -a + 7/24
need help solving this one please
Click here to see answer by Earlsdon(6287)

Question 49755: if f(x)=3x+1,and g(x)=(x²+5x)^-1/2,find g(f(x))

Click here to see answer by AnlytcPhil(1277)

Question 49869: f(x) 0 1 -1 2
____________________
x 2 3 3 4
A) state the domain
B) state the range
C) determine whether f(x) is a function
Click here to see answer by stanbon(57387)

Question 49891: Will this be considered a FUNCTION,
INPUT | 1 | -1 | 2 | -2 | 3 |
OUTPUT| 1 | -2 | +/-5 | -6 | 8 |
Click here to see answer by venugopalramana(3286)

Question 49892: Find four differant numbers from the domain that produce the same output
Annual Income |Less than $2000|$2000 - $6000|$6001 and more|
Amount of Tax | 0% | 2% | $80+5% |
Click here to see answer by stanbon(57387)

Question 49975: Given f(x) = 4x + 4, find f(0)
Click here to see answer by stanbon(57387)

Question 49973: Given f(x) = x2 – x + 7, find f(0)
Click here to see answer by stanbon(57387)

Question 49971: Are the following lines parallel, perpendicular, or neither?
L1 with equation x – 6y = 30
L2 with equation 6x + y = 6

Click here to see answer by tutorcecilia(2152)

Question 49972: Given g(x) = 4x – 3, find g(3a)
Click here to see answer by tutorcecilia(2152)

Question 49972: Given g(x) = 4x – 3, find g(3a)
Click here to see answer by Earlsdon(6287)

Question 49969: given f(x)=5x to the second power-3x +1, find f(-2)
Thank you!
Click here to see answer by tutorcecilia(2152)

Question 49970: Given f(x) = 4x – 5, find f(a – 1)
Thank you
Click here to see answer by tutorcecilia(2152)

Question 49967: Please help rewrite the equation -x-10y=50 as a function of x
Click here to see answer by tutorcecilia(2152)

Question 50115: Simple Function Evaluation:
f(x)=1/3x5(power of 5), find f(3)
Please help. I cannot get this one!
Click here to see answer by tutorcecilia(2152)

Question 50219: I need the domain and range of f(x)=20x^2-6
Click here to see answer by stanbon(57387)

Question 50214: determine domain of :
y = square root of (x^2-16)
Click here to see answer by stanbon(57387)

Question 50237: Hi can anyone help with this question
the domain of the function h(x)=3x over x(x^2-81)
Is the answer{x|x does not equal plus or minus9 and x does not equal 0}
Thanks. I've also tried to contact some tutors about paying for some help but the email addresses keep bouncing back
Click here to see answer by stanbon(57387)

Question 50245: Hi, Do the x^3's cancel each other out in the following equation?
3+6x^2 over x^3 times x^3 equaling 3+6x^2 Thanks
Click here to see answer by tutorcecilia(2152)

Question 50263: I attempted to solve this equation and came up with 4. Is this correct?
Solve the equation 4^2x+1 = 2^3x+6.
Click here to see answer by Nate(3500)

Question 50327: what is the domain of F in the problem F(x)= the square root of (2x+3)
Click here to see answer by AnlytcPhil(1277)

Question 50317: what is the domain relation of (-2,-2), (-1,-1), (0,0), (1,1), (2,2)
Click here to see answer by rapaljer(4667)

Question 50372: What is the minimum of the function x^2+4x+2?
Click here to see answer by stanbon(57387)

Question 50433: Re-post: Need your help???
For the function defined by f(x) =5x-4, find a formula for f^-1(x).
Click here to see answer by venugopalramana(3286)

Question 50480: Please help me solve this equation:
Click here to see answer by tutorcecilia(2152)

Question 50050: Two algebra classes took the same test. The mean (average) of the first class of twenty students was 90 percent. The average of the second class was 75 percent. If the average grade for the combined classes was 81 percent, how many students were in the second algebra class?
Click here to see answer by venugopalramana(3286)

Question 50498: Find the domain for:
h(x)=the square root of 2x-3 >>>>>didn't know how to input this
Click here to see answer by Nate(3500)

Question 50496: Given k(x)=-5x-6
Find K(3)-K(x)/5
I have no idea ....please help!!!
Click here to see answer by Nate(3500)

Question 50506: Greetings, I need some help and the system for figuring out the below problem.
Question: From the information in the table providing values of f(x) and g(x), evaluate (f of g)^1 (3).
The table looks like this...

x 1 2 3 4 5
f(x) 5 3 5 1 2
g(x) 4 5 1 3 2

Click here to see answer by stanbon(57387)

Question 50495: Find the composite function:
f(2)for f(x)= 7x+1, if x<1
2x, if 2 less than or equal to x less than or equal to 7
2-5x, if x>7
Click here to see answer by stanbon(57387)

Question 50415: How do you know what number to substitute for x in a function?
example: f(x)=4-9x+3x^2
Click here to see answer by rapaljer(4667)

Question 50590:
Click here to see answer by Mikemighty(1)

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