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

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Question 197798: Hi, For the following problem I got the answer 25x^2+20x+4 but it keeps coming incorrect. Can you help me?
Use the function to evaluate the indicated expressions and simplify.
f(x) = -5x + 2
(f(x))^2 = ?
thanks!
Click here to see answer by jim_thompson5910(35256)

Question 197800: Find the domain of the function. If the domain can be specified by only one interval, use (NONE, NONE) for the second interval.
f(x) = 5 / (x + 7)
thank you for your help!
Click here to see answer by edjones(8007)

Question 198109: I think I did this question right but I just want to make sure because I got kind of confused in the middle of this question. Thank you.
Create a mapping diagram that represents the relation and determine whether the relation is a function. {(-3,-6),(-1,-6),(5,-6),(8,-6)}
I lined up all of the numbers like this:
-3 -6
-1 -6
5 -6
8 -6
So, I think the realtion is a function.
Thank you!
Click here to see answer by stanbon(75887)

Question 198149: Hi!
A function f is given, and the indicated transformations are applied to its graph (in the given order). Write the equation for the final transformed graph.
f(x) = |x|; shift downward 3 units and shift 8 units to the left
thanks for your help!
Click here to see answer by stanbon(75887)

Question 198125: given f(x) = 2x^2 - 3 and g(x) = 5x + 2 find (f - g)(x)
Click here to see answer by arallie(162)

Question 198146: Hi!
A function is given below. Determine the average rate of change of the function between x = 0 and x = 0 + h.
f(t) = √-3t
thanks for your help!
Click here to see answer by solver91311(24713)

Question 198145: Hi!
A function is given below. Determine the average rate of change of the function between x = 0 and x = h.
g(x)=2/(x+9)
Thanks for your help!
Click here to see answer by solver91311(24713)

Question 198124: f(x) = 4 / (over or divided by) the square root of x - 9 (the x-9 is under the radical; so it s/b a sq root sign with the x - 9 under it)
find the domain of the function
Click here to see answer by solver91311(24713)

Question 197799: Hi.
I got a few steps wrong on the following problem, Can you help me?
Find the domain of the function. If the domain can be specified by only one interval, use (NONE, NONE) for the second interval.
f(x) = -x + 6
Click here to see answer by solver91311(24713)

Question 198174: I tried to figure out this problem and do not really know how to do it.
Write a function rule for the table:
x f(x)
2 -8
3 -12
4 -16
5 -20
I think the answer is f(x)=-4x+-8 but I am not sure.
Thank You!
Click here to see answer by solver91311(24713)

Question 198279: Hi!
Use the given functions to answer the following questions. (Enter NONE in any unused answer blanks.)Evaluate f(x)f(x) and g(x)g(x) and give their domains:
f(x) = x/(x + 3), g(x) = 2 x - 3
thanks!
Click here to see answer by jim_thompson5910(35256)

Question 198289: Hello!
Find f + g, f - g, fg, f/g and their domains.
f(x)=2/(x+3), g(x)=x/(x+3)
thanks!
Click here to see answer by jim_thompson5910(35256)

Question 198302: Hi!
Find f-g
f(x)= x^2+5x g(x)=3x^2-1
thanks!
Click here to see answer by jim_thompson5910(35256)

Question 198357: Hello!
Find the inverse function of f.
f(x) = -3 + √-9+ 6x
thanks for your help!
Click here to see answer by arallie(162)

Question 198357: Hello!
Find the inverse function of f.
f(x) = -3 + √-9+ 6x
thanks for your help!
Click here to see answer by jim_thompson5910(35256)

Question 198354: Hello!
I'm having some trouble with this inverse property. Can you help me?
Use the Property of Inverse Functions to find f^-1(x).
f(x) = (5-x)/6
thanks for your help!
Click here to see answer by jim_thompson5910(35256)

Question 198356: Hello!
Find the inverse function of f.
f(x) = √8x + 2
thanks for your help!
Click here to see answer by arallie(162)

Question 198369: Hi!
I cant get the right answer for this problem. Can you help?
Find the inverse function of f.
f(x)=( x - 7)/(4 x + 8)
thanks for your help!
Click here to see answer by jim_thompson5910(35256)

Question 198407: I am trying to find the domain for this problem
g(t)=ln(t-1)
Click here to see answer by stanbon(75887)

Question 198406: I am trying to find the domain for this problem
g(x)=2^x
Click here to see answer by stanbon(75887)

Question 198405: I am trying to find the domain for this problem
g(x)=log(x+3)
Click here to see answer by edjones(8007)

Question 198404: I am trying to find the domain for this problem
f(t)=4.5e^t
Click here to see answer by edjones(8007)

Question 195597: I have a question that i need help with:
Sketch the graph of y=x^3-3x^2+1/x^3
1. Intercepts on the x-axis and the y-axis.
Could you please explain how to answer this?
Click here to see answer by arallie(162)

Question 198635: f(t)=4.5e^t
I don't know how to explain how to get the answer
Click here to see answer by stanbon(75887)

Question 198608: Im Working On An Online assignment on webassign.net. The Question is:
Use the functions given below to answer the following question.
f(x)=x^3, g(x)= x-3
Find' (f o f)(x)
Click here to see answer by anantha(86)

Question 198721: I have to find the output for this function h(x)=19; find h(4),h(-6),and h(12) thanks
Click here to see answer by jim_thompson5910(35256)

Question 198727: Please HELP!!
A pelican flying in the air over water drops a crab from a height of 30 feet. The distance the crab is from the water as it falls can be represented by the function h(t)= -16t^2 + 30, where t is time in seconds. To catch the crab as it falls, a gull flies along a path represented by the function
g(t)= -8t + 15. Can the gull catch the crab before the crab hits the water?
Thanks!
Click here to see answer by jim_thompson5910(35256)

Question 198715: Hi!
Find the local maximum and minimum values of the function and the value of x at which each occurs. State each answer correct to two decimal places.
g(x)=1/4x^x (x>0)
thanks for your help!
Click here to see answer by solver91311(24713)

Question 198829: What kind of function is, Y= -2x squared + 1?
Click here to see answer by jim_thompson5910(35256)

Question 198829: What kind of function is, Y= -2x squared + 1?
Click here to see answer by josmiceli(19441)

Question 199072: 1.Use the relation {(�4, 3), (�1, 0), (0, �2), (2, 1), (4, 3)} to answer the following questions.
a. a.State the domain of the relation.
b. State the range of the relation.
c.Is the relation a function? How do you know?
Click here to see answer by user_dude2008(1862)

Question 199135: I can't find the section in the book that has an example similar to question 62 that explains step by step hot to solve it. Idon't know how to work this problem.
Click here to see answer by Alan3354(69443)

Question 199274: Please help me
Suppose you are at the gas station filling your tank with gas. The function C(g) represents the cost C of filling up the gas tank with g gallons. Given the equation: C(g)=3.03(g)
What does the number 3.03 represent?
The number 3.03 represents the cost of gas per gallon.
Find C(2)
Find C(9)

Click here to see answer by rfer(16322)

Question 199335: Hello!
If a ball is thrown directly upward with a velocity of 31 ft/s, its height (in feet) after t seconds is given by y = 31t - 16t2. What is the maximum height attained by the ball?
thanks so much for the help with my homework!
Click here to see answer by solver91311(24713)

Question 199338: Hello!
Find a function whose graph is a parabola with vertex (5, -7) and that passes through the point (4, 1).
thanks for your help!
Click here to see answer by RAY100(1637)

Question 199339: Hello!
A quadratic function is given.
f(x) = 3 - 36x - 36x^2
(a) Express the quadratic function in standard form.
Thanks for the help!
Click here to see answer by edjones(8007)

Question 199422: Hello!
If a ball is thrown directly upward with a velocity of 31 ft/s, its height (in feet) after t seconds is given by y = 31t - 16t^2. What is the maximum height attained by the ball?
thanks!
Click here to see answer by solver91311(24713)

Question 199466: Hi!
A quadratic function of f is given.
f (x) = 3x^2 + 6x - 7
Find its vertex and its x- and y-intercept(s)
thanks for the homework help!
Click here to see answer by nerdybill(7384)

Question 199815: x-1/9x^2+12x+4 - x + 2/3x^2-x-2
/= divided by
i got stuck at
(x-1)(x-1)/(x-1)(3x+2)(3x+2) - (x+2)(3x+2)/(x-1)(3x+2)(3x+2)
Click here to see answer by ankor@dixie-net.com(22740)

Question 199937: 18x4-9x3+6x2 factor completely x is exponets
Click here to see answer by RAY100(1637)

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