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

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Algebra: Functions, Domain, NOT graphing

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Question 58237: Mr. P's hybrid car costs 6 cents a mile to operate, and cost $25,000 to buy. Ms. Sullivan's car costs $20,000 to buy and cost 10 cents a mile to operate. Write an expression or equation for the cost to operate each car as a function with respect to the number of miles driven. When will the cars have cost the same amount to operate?
Click here to see answer by checkley71(8405)

Question 58354: Need some help
Find a polynomial with zeros of 3,-2/9 (double root), 4 and 5/8 (triple root)

Thank you
Click here to see answer by stanbon(26297)

Question 58449: 2x2+3-5x
Click here to see answer by Nate(3495)

Question 58491: find the domain and range of {x,y) y=x+2/x-5}
Click here to see answer by funmath(2873)

Question 58522This question is from textbook Beginning Algebra

: Can someone help me on this problem?
If g(x) = -3x + 2, i need to find the following:
g(m)
Thank you,
SherThis question is from textbook Beginning Algebra

Click here to see answer by funmath(2873)

Question 58499: f(x)=-2x^2-3x+8, find f(-2)please!
Click here to see answer by mifarnc(2)

Question 58626: Determine the equation for the inverse function of y=(x-2)^3+5. Thank you!
Click here to see answer by stanbon(26297)

Question 58625: Find the inverse of the relation {(4,2),(-1,5),(2,3)} Please!
Click here to see answer by funmath(2873)

Question 58622: Given: f(x)=-2+5 Find:
a. f(0)
b. f(2)
c. f(-3)
d. f(y)
Click here to see answer by funmath(2873)

Question 58501: graph f(x)=|x-3|+2 include all intercepts and the vertex. I am not sure how to do the absolute value signs on here but they should go where the parentheses are.
Thank you
Click here to see answer by funmath(2873)

Question 58677This question is from textbook
: a. Determine if the function is quadratic
b. if the graph is concave up or down
c. if the vertex of the graph is max or min. point
y=2xroot2-8x=6
and y=2xroot3-3xroot2This question is from textbook

Click here to see answer by stanbon(26297)

Question 58693: Let f(x)=x^2+3x-5,g(x)=x-3, find
a. (f+g)(x)
b. (f-g)(x)
c. (fg)(x)
d. (f/g)(x)
e.(f of g)(x)
f. g[f(x)]
g.(f-g)(-2)
h. f[f(3)]
Please help!!!
Click here to see answer by funmath(2873)

Question 58676This question is from textbook
: Solve the systems of equatons by any convenient method
{4x-3y=9
{8x-6y=16
This question is from textbook

Click here to see answer by checkley71(8405)

Question 58650This question is from textbook
: Does the systems {2x=5y=6 have a unique solution, no solution or many
{x=2.5y=3
solutions? What does this mean graphically?This question is from textbook

Click here to see answer by checkley71(8405)

Question 58678This question is from textbook
: a. Determine if the function is quadratic
b. if the graph is concave up or down
c. if the vertex of the graph is max or min. point
g(x)=-5xroot2-6x=8This question is from textbook

Click here to see answer by stanbon(26297)

Question 58705: need son hlp on this one
Given f(x)=8(2x^3-9)^7 find the inverse function
thank you
Click here to see answer by Nate(3495)

Question 58649This question is from textbook
: Solve the systems of equations graphically
{4x-3y=-4
{2x-5y=-4This question is from textbook

Click here to see answer by ankor@dixie-net.com(6693)

Question 58751This question is from textbook Elementary and Intermediate Algebra
: I am not sure if i submitted it to the correct help section, but here it goes...
determine whether each relation is a function.
x^2 = 1 + y^2This question is from textbook Elementary and Intermediate Algebra

Click here to see answer by funmath(2873)

Question 58670This question is from textbook
: Solve the sysytems of equations by elimanation
{x=3y=5
{2x=4y=8
and
{5x=3y=8
{2x=4y=8This question is from textbook

Click here to see answer by checkley71(8405)

Question 58668This question is from textbook
: Solve the systems of equation by substitution
{x-5y=12
{3x=4y=-2
and
{2x-3y=5
{5x=4y=1This question is from textbook

Click here to see answer by funmath(2873)

Question 58809: How do you solve this?
f(x)=x+1 and g(x)=2x
f(g(x))= ?

Click here to see answer by funmath(2873)

Question 58816: What exactly is algebra and how do you do it?
Algebra is nothing but a reunion of broken parts. It is the generalised form of numerals
Click here to see answer by jaya_rohith1@yahoo.com(33)

Question 58905: can you help me with this fuction plz how do you work out x of this fuction machien here it is
x-x2-+12=512
Click here to see answer by checkley71(8405)

Question 58984: Find the domain of the function
y=3x/4
Click here to see answer by stanbon(26297)

Question 58983: find the domain of the function:
y=2/x-1
Click here to see answer by rcmcc(152)

Question 59131: Use the functions f(x) = 2x +7, g(x) = x squared + 3x, and h(x) = 1/x-7 to find each of the following.
(1) (f + g) (-1)
(2) (g - f) (x)
(3) (fh)(0)
(4) (g ○ f) (-1)
(5) (f ○ f) (0)
(6) (g/f) (4)
(7) (g ○ h) (1/2)
(8) (f ○ g ○ h) (8)
Click here to see answer by funmath(2873)

Question 59176: Find the verticle asymptotes and/or hole(s) for R(x).
x^2 + x - 42 / x^2 - x - 30
Click here to see answer by stanbon(26297)

Question 59236: Please Find the Derivatives of the following and simplify:
y=5e^3x

y=1/e^x

y=e^3

y=e^x2e^2x

Thanks!

Click here to see answer by venugopalramana(3286)

Question 59236: Please Find the Derivatives of the following and simplify:
y=5e^3x

y=1/e^x

y=e^3

y=e^x2e^2x

Thanks!

Click here to see answer by funmath(2873)

Question 59178: Find the domain of the rational function:
f(x) = (2x^2 - 4) / (3x^2 + 6x - 45)
Click here to see answer by funmath(2873)

Question 59299: if f(x) =2x+5 find the following.
f(-4)
f(3)-5
Click here to see answer by funmath(2873)

Question 59471: Can someone please provide me with an example of a composite function step by step solution
Click here to see answer by funmath(2873)

Question 59645: What is the difference between a dependant and an independant varible? And how do you determine the domain and the range of a function?
the following equation y=3x+2
Which is the domain of each and how would I determine it.
I have to explain this but I have no glue, this is new to me and I need some help. thank you
Click here to see answer by funmath(2873)

Question 59493: how to graph a function
Click here to see answer by funmath(2873)

Question 59699: How do you evalute f(x)=x^2-6/3x; f(n-3)?
Click here to see answer by funmath(2873)

Question 60014: what is the domain of this y=2x-1
Click here to see answer by funmath(2873)

Question 60145This question is from textbook Algebra 1
: s=l-rl Solve for rThis question is from textbook Algebra 1

Click here to see answer by checkley71(8405)

Question 60208This question is from textbook Algebra 1

: |(3,1),(2,5),(4,0),(3,-2)|This question is from textbook Algebra 1

Click here to see answer by funmath(2873)

Question 60235: Find the domain of the composite function f º g.
f(x)=1/(x+10); g(x)= x+5
Click here to see answer by uma(370)

Question 60238: If the function defines a one-to-one function, find the inverse.
f(x) = (x+2)^3 - 8
Click here to see answer by uma(370)

Question 60237: Find the inverse function of f. State the domain and range of f.
f(x) = (3x-2)/(x+5)
Click here to see answer by funmath(2873)

Question 60236: Find the functions f and g so that the composition of f and g is H.
H(x)=cuberoot(x+1)
Click here to see answer by funmath(2873)

Question 60135This question is from textbook Algebra 1
: 2x=-3y+10This question is from textbook Algebra 1

Click here to see answer by tutorcecilia(2042)

Question 60298: 12x-2y=13
Click here to see answer by tutorcecilia(2042)

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