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

Tutors Answer Your Questions about Functions (FREE)

Question 25609: If f(x) = 5x - 1, find the following.
f(a-2)
Click here to see answer by uknouluvme89(30)

Question 26475: i am so sory to bother you. but the thing here is that i am a 10th grader in hight school. and i need help on algebra 1. is there any way you can help me with a tutor? maybe not person to person but to help me out. finals are comming and i really dont have time to stay after school. i baby sit. so if there is any chance you might be able to help thank you. if not then still thank you!
ruby
Click here to see answer by elima(1433)

Question 25221: is a squared number a function of a number? can a squared number be reduced?
Click here to see answer by venugopalramana(3286)

Question 26627: Also, do you have a subheading for finding the domain of a function?
Click here to see answer by AnlytcPhil(1806)

Question 26640: find the domain of the function
f(x)=x+6-(square root of x+2)
--------------------
3x-1/2

Click here to see answer by longjonsilver(2297)

Question 26636: Can you help me find the domain of the following function?
f(x)=-x^2-x=5
Click here to see answer by longjonsilver(2297)

Question 26671: X^2 +15x+20
Click here to see answer by elima(1433)

Question 26686: For what value of 'c' is 'ax - by = c' a direct variation?
Click here to see answer by venugopalramana(3286)

Question 26775: I'm having problems solving some questions for example, y = -[x+6] I'm supose to find the range and domain of the euaqtion.
Click here to see answer by josmiceli(19441)

Question 26892: 9z+8=84.6 can you solve this simple question for me please
Click here to see answer by vincygrrl22(7)

Question 27031: I need the answer for the following or at least one example of how to do it
For the function, y= 1/x-2
Give the y values for x = -2, -1, 0, 1, 3.
Thanks
Click here to see answer by venugopalramana(3286)

Question 27042: For the functioin y= 1/ x-2
Solve y if x- -2, -1, 0, 1, 3
I got an example of how to do it, I just want to make sure my answer is right because now I have to plot a graph
DO I have the answers right?
x= -2, then y= -0.25
x= -1, then y= -0.33
x= 0, then y= -0.5
x= 1, then y= -1
x= 3, then y= 1
Thanks
Click here to see answer by longjonsilver(2297)

Question 27259: Can anyone help me with this question?
I am so stumped with this one

In most businesses, increasing prices of their product can have a negative effect on the number of customers of the business. A bus company in a small town has an average number of riders of 800 per day. The bus company charges $2.25 for a ride. They conducted a survey of their customers and found that they will lose approximately 40 customers per day for each $.25 increase in fare.
Given the descriptions below, plot a graph of the function, explain your choice, and give the domain and range of the function.

Any help will be greatly appreciated
Thanks in advance
Click here to see answer by bmauger(101)

Question 27431: How do you find the inverse of the function: f(x)=5^x
Click here to see answer by longjonsilver(2297)

Question 27440: what can i do to 3 to get 9, to 6 to get 36
Click here to see answer by longjonsilver(2297)

Question 27600: If X=20 then X^20= ? HELP
Click here to see answer by MOD(6)

Question 26947: PLEASE NEED HELP
show that the set of all integers of form 36a-90b+72c forms an ideal in Z(intergers) and find the generator for the ideal.

Click here to see answer by venugopalramana(3286)

Question 27802: Find the mass of a ball given by x^(2)+y^(2)+z^(2) <(and equal) a^(2) if the density at any point is proportional to its distance from the z-axis.
Click here to see answer by bmauger(101)

Question 27862: I need help understanding "completing the square" when dealing with quadratic functions. I don't understand where to pull that first number from.
Click here to see answer by elima(1433)

Question 27831: what would the answer be for this (((3^3\2*5)))
Click here to see answer by bmauger(101)

Question 27908: how do i find the growth rate in this exponential growth function: 1,000,000=10,000(1+r)^27 ?
Click here to see answer by bmauger(101)

Question 27911: Please help me solve this problem.
(5 + 3i)* (2 + i)
Click here to see answer by bmauger(101)

Question 28010: just learning algebra at the age of 60 stuck on the following
2+X OVER 2 = 1- X OVER 3 WHAT IS THE VALUE OF X
Click here to see answer by bmauger(101)

Question 28019: HI.

I am looking for books or video,can help you to learn algebra from the first step . THANK YOU !
Click here to see answer by sdmmadam@yahoo.com(530)

Question 27985: Find the domain of y=x+3if the range is {-1,1,3,5}
I don't get this
Click here to see answer by sdmmadam@yahoo.com(530)

Question 28059: Let g and h be elements of a group G.
How do i show |g(inverse)| = |g|
Click here to see answer by venugopalramana(3286)

Question 28368: how do you find the y-intercept on a table if it doesn't show it?
Click here to see answer by Courtney.A.P(1)

Question 28390: The $75 cost for a party was to be shared equally by all those attending. Since five more people attended than what was expected, the price per person dropped $0.50. How many people attended the party?
Click here to see answer by Paul(988)

Question 28192: I AM HAVING A PROBLEM SOLVING THE FOLLOW...PLEASE HELP
f(X)= -2x + 5: find
A. F(2)
B. F(-3)
f(a)=1/3a + 2; find
A. f(0)
B. f(-6)

Click here to see answer by LilSkittleMd(119)

Question 28511: Find and simplify the difference quotient
f(x)=
Click here to see answer by venugopalramana(3286)

Question 28543: Please help: find the slope and the y-intercept of the line
f(x)=1/2x
Click here to see answer by stanbon(75887)

Question 28670: a) Find f(0), B) solve f(x)=0 for f(x)=4x+7.
Click here to see answer by sdmmadam@yahoo.com(530)

Question 28798: How can you tell if a graph is that of a function?
((It would really help if this could be answered as soon as possible, because I have class in the morning... Thank you to anyone who answers.))
Click here to see answer by sdmmadam@yahoo.com(530)

Question 28823: I need to simplify this faction-
=(3x+1/x-1)+1 over (3x+1/x-1)-3
Click here to see answer by Bae(1)

Question 28828: solve
2x-3=x+10
Click here to see answer by xcentaur(357)

Question 28828: solve
2x-3=x+10
Click here to see answer by askmemath(368)

Question 28951: let f(x)=-2+3 and g (x)=x2 (x squared)
f(g(3))
Click here to see answer by sdmmadam@yahoo.com(530)

Question 29044: Please help me find all the zeros of the following function
-(x-4)^3(x+3)^4(x+1)^5(x-1)^2
Click here to see answer by longjonsilver(2297)

Question 29193: i am having problems with a question it is
3a(2b-4c)
---------
b(a-c)
a=-4 b=5 c=-2
i have no idea if i remove the brackets if i change the - to + please help
Click here to see answer by Earlsdon(6294)

Question 29250: Can someone pls help me with Simplifying Rational Expressions?, thanks!
1)

2)

3)

Click here to see answer by sdmmadam@yahoo.com(530)

Question 29250: Can someone pls help me with Simplifying Rational Expressions?, thanks!
1)

2)

3)

Click here to see answer by Earlsdon(6294)

Question 29247: I am having problems solving this problem: f(x)=1/x, find f(2+h)-f(2)/h
Click here to see answer by sdmmadam@yahoo.com(530)

Question 29339: [5x+4/2]=12 It wants me to rationalize the denominator and simplify. The brackets are supposed to be the lined ones but I can't do that on here.
Click here to see answer by ikdeep(226)

Question 29296: what is a domain ?
Click here to see answer by longjonsilver(2297)

Question 29371: what is the constant of variation if y varies directly as x, and y=95 when x=19?
Click here to see answer by stanbon(75887)

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