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

Tutors Answer Your Questions about Functions (FREE)

Question 32288: I need help solveing for x:(2/3)x+4=(3/4)x+2
Click here to see answer by mukhopadhyay(490)

Question 32406: Word Problem
Two angles of a triangle measure 21 degrees and 86 degrees. What is the measure of the third angle?
Click here to see answer by wuwei96815(245)

Question 32393: Find the slope of the line determined by the equation:
Y = X - 12
______
4

Please enter your answer as a fraction.
Click here to see answer by Cintchr(481)

Question 32423: Given f(x)=4x+1 and g(x)=x^2+1
Find: (f o g)(x)=
my answer was 4x^2+4 was I correct?
Click here to see answer by mukhopadhyay(490)

Question 32423: Given f(x)=4x+1 and g(x)=x^2+1
Find: (f o g)(x)=
my answer was 4x^2+4 was I correct?
Click here to see answer by venugopalramana(3286)

Question 32529: Find the domain of the functions:
(a). f(x)= the sqaure root of 3-x
(b). g(x)= x/x^2-5x
Click here to see answer by mukhopadhyay(490)

Question 32434: Given f(x) 4/x+3
What is the vertical asymptote and horizontal asymptote?
Click here to see answer by mukhopadhyay(490)

Question 32579: I am having trouble with this problem, I need to sove for x. let h(x)= 4^(2x-1)
h(x)=(square root of 2) sorry i'm not sure how to enter that.
Click here to see answer by mukhopadhyay(490)

Question 32791: I do not understand this section can you explain this to me more clearly?
Click here to see answer by ikdeep(226)

Question 32789: Please, Calculate the equation of the linear function which contains the ordered pairs (-4,1) and (3,6).
Click here to see answer by checkley71(8403)

Question 32289: Simplifying: 2(2x+-4)+-3(4x+-1)+2(x+3)=0

Click here to see answer by mohd18(3)

Question 32958: This proble involves a function rule..
Input X 1 2 3 4 5 6
Output Y 3 2 1 0 -1 -2
We need to determine the function rule.
Another one..
Input X 1 2 3 4 5 6
Input y 1 3 5 7 9 11
Thanks!
Click here to see answer by checkley71(8403)

Question 32998: ax-2y=4=0 we know that f(-2)=-8 what is the value of a?
Click here to see answer by xcentaur(357)

Question 32937: f(x) = 3x^+2x-4
Click here to see answer by xcentaur(357)

Question 32891: Hi I am having some trouble with this problem from my College pre-calculus class.
Given the following rational function, Complete each of the following:
a. Find the zeros of the function.
b. Find the y-intercepts.
c. Find the horizontal and vertical asymptotes.

Click here to see answer by xcentaur(357)

Question 33017: A(-1;4):B(2;3): C(0;-3): D(-3;-2)
these points on a graph make a rectangle...specify...
what is the equation for the diagonales d1 and d2 of the rectangle?

what is the equation of the medianes m1 and m2 of the rectangle?

what is the area of this rectangle?
Click here to see answer by khwang(438)

Question 33121: In my math class we are doing Functions right now. The specific three we are using are Linear, Quadratic, and Exponential. Linear is y=mx+b, Quadratic is y=ax^2(+b) and Exponential is y=a*b^x. Each problem gives ordered pairs, or a table. I'll show you a table, and my answer, which I do not believe to be correct, since when I plug in some numbers from the table, doesnt not equal out.
EX:
X Y
-2 1.5
0 .5
2 -.5
4 -1.5
y=-x +.5
Now, that is how my math teacher taught us to solve it; find the slope, y intercept when x=0, etc, and when you plug numbers in from the table, my answer does not work. Obviously, since you are very intelligent, you will be able to see my flaw. Thank you.
Click here to see answer by venugopalramana(3286)

Question 33171: A rectangular yard is surrounded by a fence that is 4 feet longer than it is wide. If the perimeter of the fence is 424 feet, what are the dimensions of the yard it encloses?
Wouldn't this just be 424 minus 4?
Click here to see answer by mukhopadhyay(490)

Question 33191: what is the circumference of a circle with a diameter of 6cm?
Click here to see answer by sarah_adam(201)

Question 33191: what is the circumference of a circle with a diameter of 6cm?
Click here to see answer by checkley71(8403)

Question 33240: Please help:
If g(x)= 2x^2-5x-7
Find g(-1), g(2), g(-3), g(4)
Thanks
Click here to see answer by xcentaur(357)

Question 33164: Please, please, please, explain how you get the answer, I came up with 38% and I don't think it's right
The formula used to calculate the percentage of body fat for men is:
% Body fat = (-98.42 + 4.15w � 0.082 b) / b
Where �w� is the waist measurement in inches and �b� is the total body weight in pounds
What is the body fat for a man weighing 156 pounds and waist measurement of 32 inches. Round the percentage to the nearest interger.

Click here to see answer by longjonsilver(2297)

Question 33193: What is the circumference of a circle with a diameter of 6cm.
Click here to see answer by priya(51)

Question 33420: Not sure if the subject is right...this is a function word problem. I think I know the answer, but don't know how to write a function for it. PLEASE HELP! Thanks.
In 1992, there were 4,032 Ace Hardware Stores, while that number had decreased to 3,682 in 2002. Write a function that represents the number of stores, N, in terms of the year, letting t=0 represent the year 1992. Then use your function to predict the number of stores that will exist in the year 2007. Theoretically, in what year will there be NO Ace Hardware stores left??
N(t)=________________
In 2007:_____________
0 stores in:_________
This is from a worksheet, not my book. I would GREATLY appreciate any and all help received. Thanks again! : )
Click here to see answer by longjonsilver(2297)

Question 33388: I was wondering if you could please help me figure out how to do this problem. it is from the COMPASS practice test. i am retaking the COMPASS Running Start Test tomorrow, and am having trouble understanding how to complete the function problems. :(
3. For the 2 functions, f(x) and g(x), tables of values are shown below. What is the value of g(f(3)) ?
x_____f(x)_________________x____g(x)
�5____7____________________�2___3
�2___�5____________________1___�1
1_____3____________________2___�3
3_____2____________________3___�5
ANSWERS
A. �5
B. �3
C. �1
D. 2
E. 7
Click here to see answer by stanbon(75887)

Question 33530: What is the algebra fun solution to prove that 1 + 1 = 3?
Click here to see answer by mukhopadhyay(490)

Question 33530: What is the algebra fun solution to prove that 1 + 1 = 3?
Click here to see answer by AnlytcPhil(1806)

Question 33671: not sure if this is the right section, but here it goes:
A complete algebraic solution to explain your reasoning is required to achieve full marks. Show all your work.
Write an equation in the form y = ax^2 + bx + c for the quadratic function whose graph passes through the points (8,0), (0,8), and (-2,0).

This is Grade 11 University Math, it is a TIPS problem that we got to take home but I'll have to re-write it in class with a different but similar question.
Click here to see answer by stanbon(75887)

Question 33730: What is the inverse function of ? Thanks.
Click here to see answer by Nate(3500)

Question 33771: prove algebraically that is a one-to-one function. Thank you.
Click here to see answer by Nate(3500)

Question 33822: evaluate the following functions:
f(x)=-2x^2+3x+x-10
f(1)=? (I got -4)
f(-2)=? (I got -26)
f(3)=? (I got 20)
I just want to make sure I got the right answers and if I didn't where I went wrong. Thanks!
Click here to see answer by ice_water35(8)

Question 33946: Am doing this right? Is the ordered pair 5,-4 the answer for the following question
which ordered pair is a solution to 3x - 4y = -1
thanks for your help
Click here to see answer by stanbon(75887)

Question 33997: Find the slope of the line...

3x - 6y = 18
Click here to see answer by longjonsilver(2297)

Question 34027: x^2+3x-10=
Click here to see answer by sarah_adam(201)

Question 34155: using foil method find the product (-c-d)2
i got -c2+cd-d2 is that correct?
Click here to see answer by longjonsilver(2297)

Question 34365: For the function y=4^x, state the domain and range.
Click here to see answer by ichudov(507)

Question 34379: Find the y intercept for the function y=4^x.

Click here to see answer by lyra(94)

Question 34421: find the domain of the sqrt (3-x)/x
Click here to see answer by venugopalramana(3286)

Question 34355: Using the index of a sequence as a domain and the value of the sequence as the range, is a sequence a function? Thank you
Click here to see answer by stanbon(75887)

Question 34496: Page 210 Problem 44.g(10)
Question; Let g(x)= -x squared + 4x+1.
Click here to see answer by lyra(94)

Question 34538: Need help with the following composition of functions problem. When I worked this problem I came up with (a) -2 and (b) 12:
5. Given that f(x)=1-3x and h(x)= (5x^2)+4x , find each of the following
(a) (f o h)(-1)
(b) (h o f)(1)

Click here to see answer by lyra(94)

Question 34682: Solve the equation. Beware of extraneous solutions. (15/x) + ((9x-7)/(x+2)) =9

Click here to see answer by stanbon(75887)

Question 34664: the function f(x)= x/3-x find an expression for (f to the negative 1 power) f-1 (x) in addition state the domain of both f and f (-1)
Click here to see answer by longjonsilver(2297)

Question 34802: I study and do well on homework but for some reason I forget everything when I take a test, What do i do?
Click here to see answer by longjonsilver(2297)

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