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

Tutors Answer Your Questions about Functions (FREE)

Question 58010: Determine where the function is increasing and where it is decreasing.
f(x) = 4x^2 - x - 3
Click here to see answer by venugopalramana(3286)

Question 58058: rewrite 3x+4y=15+6y so that y is a funtion of x
Click here to see answer by rcmcc(152)

Question 58058: rewrite 3x+4y=15+6y so that y is a funtion of x
Click here to see answer by Earlsdon(6294)

Question 58058: rewrite 3x+4y=15+6y so that y is a funtion of x
Click here to see answer by tutorcecilia(2152)

Question 58059: C=2*3.14r,r
Click here to see answer by tutorcecilia(2152)

Question 58088: 5>=4-3X>-2 answer in interval notation

Click here to see answer by stanbon(75887)

Question 58211: I need some help please
f(x)=3x^2-5x+2, find [f(x+h)-f(x)}/h]
please help
Thank you

Click here to see answer by stanbon(75887)

Question 58211: I need some help please
f(x)=3x^2-5x+2, find [f(x+h)-f(x)}/h]
please help
Thank you

Click here to see answer by hayek(51)

Question 58233: if f (x) = 5x - 1, find the following:
f (a - 2)
Click here to see answer by funmath(2933)

Question 58229: f (x) = x2 - 7x + 10; find (a) f (0), (b) f (5), and (c) f (-2).
evaluate each function for the value specified please.
Thank you :)
Click here to see answer by funmath(2933)

Question 58238: State the degree of the following polynomial:
8x^3 + 6x^2y + 4xy^3 - 2y^4
Click here to see answer by funmath(2933)

Question 58333: can u solve the problem for me
Click here to see answer by funmath(2933)

Question 58332: can u solve the problem for me
Click here to see answer by Nate(3500)

Question 58326: A=P+Prt
Click here to see answer by Nate(3500)

Question 58351: Given y=(x-2)/(x+5) fing the inverse function (switch x&y and solve for Y)
Could someone help me with this one plz
Click here to see answer by funmath(2933)

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(8403)

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(75887)

Question 58449: 2x2+3-5x
Click here to see answer by Nate(3500)

Question 58491: find the domain and range of {x,y) y=x+2/x-5}
Click here to see answer by funmath(2933)

Question 58522: Can someone help me on this problem?
If g(x) = -3x + 2, i need to find the following:
g(m)
Thank you,
Sher
Click here to see answer by funmath(2933)

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(75887)

Question 58625: Find the inverse of the relation {(4,2),(-1,5),(2,3)} Please!
Click here to see answer by funmath(2933)

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(2933)

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(2933)

Question 58677: 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=2xroot3-3xroot2
Click here to see answer by stanbon(75887)

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(2933)

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

Click here to see answer by checkley71(8403)

Question 58650: Does the systems {2x=5y=6 have a unique solution, no solution or many
{x=2.5y=3
solutions? What does this mean graphically?
Click here to see answer by checkley71(8403)

Question 58678: 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=8
Click here to see answer by stanbon(75887)

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(3500)

Question 58649: Solve the systems of equations graphically
{4x-3y=-4
{2x-5y=-4
Click here to see answer by ankor@dixie-net.com(22740)

Question 58751: 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^2
Click here to see answer by funmath(2933)

Question 58670: Solve the sysytems of equations by elimanation
{x=3y=5
{2x=4y=8
and
{5x=3y=8
{2x=4y=8
Click here to see answer by checkley71(8403)

Question 58668: Solve the systems of equation by substitution
{x-5y=12
{3x=4y=-2
and
{2x-3y=5
{5x=4y=1
Click here to see answer by funmath(2933)

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(2933)

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(8403)

Question 58984: Find the domain of the function
y=3x/4
Click here to see answer by stanbon(75887)

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(2933)

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(75887)

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(2933)

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(2933)

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