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

Tutors Answer Your Questions about Functions (FREE)

Question 404652: given the function h(x)=4x+4 find each of the following
h(4)=
h(-10)=
h(6,6)=
Click here to see answer by subudear(55)

Question 404654: write an equation of the line containing the given points and parrallel to the given line. Express your answer in the form y=mx+b
(-3,2);3x=7y+5
Click here to see answer by subudear(55)

Question 404650: determine weather the graphs of the equations are perpendicular
4x-3y=8
4y-3x=7
Click here to see answer by subudear(55)

Question 404645: find the slope and the y-intercept
f(x)=-5x-7
Click here to see answer by Alan3354(30975)

Question 404646: find the slope if it exsists of the line containing the pair of points
(-3.3,15.5) and (-0.8,5.6)
Click here to see answer by subudear(55)

Question 404646: find the slope if it exsists of the line containing the pair of points
(-3.3,15.5) and (-0.8,5.6)
Click here to see answer by rfer(12646)

Question 404762: find the domain of the function.
p(x)=x^2-2x+5
Click here to see answer by richard1234(5390)

Question 404675: f(x)=4/3x+5 What is the domain and range?
Click here to see answer by neatmath(300)

Question 405158: find the derivative ln x/ square root x^2 +1
y'=?
Click here to see answer by Tatiana_Stebko(1326)

Question 405332: solve each equation for y, x=-5/2
Click here to see answer by richard1234(5390)

Question 405550: if f(x)=x^2-7x find f(a+1)-f(a)
Click here to see answer by jim_thompson5910(28493)

Question 405617: y=-2x+4
You need to graph it out
Click here to see answer by ewatrrr(10682)

Question 405593: For this problem, write a system of equations in two or three variables. Use the method of your choice to solve:
14. One night the manager of the Sea Breeze Motel rented
5 singles and 12 doubles for a total of $390. The next night
He rented 9 singles and 10 doubles for a total of $412.
What is the rental charge for each type of room?

Click here to see answer by ankor@dixie-net.com(15628)

Question 405596: Determine whether each system is independent, dependent or inconsistent.
2x+2y=8
x+y=4

Click here to see answer by Alan3354(30975)

Question 405745: What is the domain of f of g of x if f(x)= square root of x-6 and g(x)= 1/x^2-2
Click here to see answer by stanbon(57228)

Question 405986: Mr. Simon invests a total of $7003 in two savings accounts. One account yields 7.5% simple interest and the other 8.5% simple interest. He would like to find the amount placed in each account if a total of $582.33 in interest is received after one year. Write a system of linear equations to express this problem.
Click here to see answer by mananth(12270)

Question 405987: How much pure water must be mixed with 4 pints of 50% acetic acid to produce a mixture that is 33% acetic acid?

Click here to see answer by mananth(12270)

Question 406201: evaluate the function rule for the given value. f(x)=3^x for x=-4 I would have tried the problem but i don't know how to start it.
Click here to see answer by stanbon(57228)

Question 406206: evaluate the function rule for the given value. y=12*3^x for x=4
Click here to see answer by ewatrrr(10682)

Question 407012: Write an equation to represent each relation, {(-6,4),(-3,8),(1,-24),(2,-12),(6,-4)} and {(-4,3),(-2,12),(-1,48),(1,48),(2,12)}
Click here to see answer by Edwin McCravy(8880)

Question 407219: graph the function (f) x=-4x
Click here to see answer by richard1234(5390)

Question 407212: Given the function K described by k (x)=x+15, find each of the following: k(0)=
Click here to see answer by richard1234(5390)

Question 407213: Given the function F described by F (x)=5x, find each of the following:
(a). f(-17)
(b). f(6)
(c). f(21)
f(-17)=??
Click here to see answer by unit(6)

Question 407271: Rule: f(x)= x squared - 3x
f(x+1)=
Click here to see answer by nerdybill(6948)

Question 407280: rule: h(x)= x/x+2
h(x-1)=
Click here to see answer by unit(6)

Question 407276: find the equation of the line through (2,3) and (-1,2)
Click here to see answer by unit(6)

Question 407586: Please help me:Write a function rule that represents the function.
(0,8),(1,6),(2,4),(3,2),(4,0)
Click here to see answer by MathLover1(6618)

Question 407619: f(x)= x^2-1
Click here to see answer by richard1234(5390)

Question 407705: Let(f)=ax^5+bx^3+cx+9 were a,b,and c are constants.
If f(6)=17, determine the value of f(-6)
Click here to see answer by richard1234(5390)

Question 407687: help with a question
how to find the domain of f(x)/g(x) g(x)= x+2/x-4 f(x)=x^2+6

x^2 + 6 / x+2/x-4
I believe that I have to multiply both sides by x-4
but I am really lost on a problem like this and do not understand.
Click here to see answer by graphmatics(170)

Question 407741: let f be a function with domain (-2,positive infinity) and range [-3,4].
Find the domain and range of y=-f(x+2)-3

Click here to see answer by robertb(4012)

Question 407883: Find the range of f(x) = -2x^2 + 4 for the domain (-3, 0, 2)
Click here to see answer by jim_thompson5910(28493)

Question 407808: how do i find the domain of (3,4) (-5,4) (2,1) (8,4)
Click here to see answer by jim_thompson5910(28493)

Question 408693: h(x)=8x+7
h (9)
h (-1)
h (6.7)
Click here to see answer by clarkp(14)

Question 408745: f(x)=3x^-1 for x=2/3
Click here to see answer by clarkp(14)

Question 408981: what is the domain and range of
the function y= the square root of x plus 8
Click here to see answer by ewatrrr(10682)

Question 409148: inverse of xt
Click here to see answer by Jeef Gorrdon(26)

Question 409605: Find the domain and range of
{(-3,-7), (-1,-3), (0,-1), (2,3), (4,7)}

I don't understand this at all.
Click here to see answer by jim_thompson5910(28493)

Question 410395: Find the function value of f(x)=x³ f(4)=
Click here to see answer by Alan3354(30975)

Question 410515: f(x)=5x-4 and g(x)=x^2+3. Find the following:
(g-f)(x)
(fg)(x)
domain of g/f
Click here to see answer by Theo(3458)

Question 410504: What is the range of f(x)=|x-2|
Click here to see answer by Theo(3458)

Question 410403: In 1920, the record for a certain race was 45.7 sec. In 1990, it was 44.3 sec. Let R(t)= the record in the race and t= the number of years since 1920. So then what does R(t)=
what is the predicted record for 2003?
what is the predicted record in 2006?
In what year will the predicted record be 43.74 seconds?
Click here to see answer by ankor@dixie-net.com(15628)

Question 410572: state the domain of each function.
f(x)=4x-1
Click here to see answer by edjones(7569)

Question 410596: (3/2) to the power of -3
Click here to see answer by Earlsdon(6287)

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