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Tutors Answer Your Questions about Rational-functions (FREE)
Question 156953: Stan is so good i had to come back for more.
1)Given the function y=2x-3/x-1 what are the
a)x intercept
b)y intercept
c)vertical asymptote(s)
d)horizontal asymptote(s)
e)slant asymptote
2)For the function f(x)=x^2(x-2)
a)find the X intercepts and for each intercept indicate whether the graph of F crosses (c) or merely touches (t)the X axis at each intercept.
b)find the Y intercept
c)Over what interval is f>0?
Click here to see answer by jim_thompson5910(13794)   |
Question 157139: I've been stuck on this problem for hours and its the only homework problem I can't solve on my assignment. I've tried everything even family members couldn't help me, so here it goes.
 *
The directions said to perform multiplication and simplify.
Thank you tutor for taking your time to helping me.
Click here to see answer by Edwin McCravy(2922) |
Question 158089: I have many problems like this one but some are linear,quadratic,cubic,
well the 1st problem is linear. Y=-2x+1 so we have to graph it and identify the domain and range. I've graphed it but I havent figured out how to find the domain and range. I've tried on other problems...x>0 stuff like that but i dont know if its right. Ive tried going over it a hundred times and even tried looking online on how to identify domain and range...but nothing helps... I'm really struggling with this and 39 other problems just like it.
Click here to see answer by vleith(1977) |
Question 158257This question is from textbook college algebra
: In fact, I have to solve problem 26, but some information are found in problem 25.here they go.
25) Suppose ABC car rental charges a fixed amount per day plus an amount per mile for renting a car.Heidi rented a car one day and paid $87 for 200 miles. On another day, she rented a car from the same agency and paid $117.50 for 350 miles.Determine the linear function that the agency could use to determine its daily rental charges.
now, the real problem 26) Suppose that Heidi (of problem 25) also has access to speedy car rental, which charges a daily fee of $15.00 plus $ 0.31 per mile.Should Heidi use ABC Car rental from problem 25 or speedy car rental?
well, I started by find 25)f(x)=0.25x+30 and I tried to use f(x)=0.31x+15,with no results.This question is from textbook college algebra
Click here to see answer by scott8148(3385)  |
Question 159071: please answer this question: the average cost of tuition fees, room and board for 2 year institution increased from $1979 in 1980 to $4895 in 1997.
A) find the linear function that will give average expense of a two year institution E, as a function of time, x, where x is defined to be the number of years since 1980.
B) use the equation to predict the average expense associated with 2010.
i tried to find the linear function but i got stuck i been here for hours and i could figure it out. i got E=17x+1979-4895
Click here to see answer by vleith(1977) |
Question 158880: I have asked for help on these and have not gotten any response.Can anyone help? Give the domain and range of the following. A. (2,5);(9,8) B. y=3x C.y=[2x] D.x=2+3y I am working out of home school books they do not give a good explanation . I have tried books from the library and cant find info on this part of algebra. Please help if you can . I am not asking anyone to do my work for me. I really need help.
Click here to see answer by edjones(3298)  |
Question 159552: I still am in need of help if someone can. question in home school book reads as this. Inverse each given function; then determine whether the result is a function. 1. A={(2,8);(3,7);(9,8)} a.___ b.___ 2. C={(4,5;(5,4);(-4,5)} a.___ b.___ 3. E={(4,1);(1,3);(-2,5)} a.___ b. ____ 3. G= {(2,0);(0,1);(-3,2)} a____ b ____ Could anyone help explain these. There isn't enough information in these books. Any help would be appreciated.
Click here to see answer by stanbon(26296) |
Question 159553: A pole 13 meter long leans against a wall. The bottom of the pole is 5 meter from the wall. If the bottom of the pole is pulled away x centimeter so that the top slides down by the same amount, find x. please show the solution. thank you
Click here to see answer by stanbon(26296) |
Question 159589: Would you be able to do me a big favor and see if these problems are correct?
#1:
5/x+3 = 3/x-1
(x+3)(x-1). 5/x+3 = (x+3)(x-1)
5(x-1) = 3(x+3)
5x-5 = 3x+9
2x-5 = 9
2x/2 = 14/2
x = 7
#2
x/2x^2 - x-1 = 3/x^2 - 1 + 3/2x+1
x/(2x+1)(x-1) = 3/(x+1)(x-1) + 3/2x+1
x/(2x+1)(x-1)(x+1) = 3/(2x+1)(x-1)(x+1) + 3/(2x+1)(x-1)(x+1)
x(x+1) = 3(2x+1) + 3(x+1)(x-1)
x^2 + x = 3x+3 + 3(x^2-x+x-1)
x^2 + x = 3x+3 + 3x^2-3
x^2 + x = 3x^2 + 3x
(x+1)(x-1) = 3x(x+1)
x-1 = 3x
-1 = 2x
x = -1/2
Thanks for you help! Paul
Click here to see answer by oscargut(682)  |
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