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Question 171311: I need a little help trying to figure out this proble it is on how to find specified values of functions.. So here is my question..
Find f(2) given f(x) = -2x to the third power + x two the second power +23 That is my question...
Click here to see answer by gonzo(654)

Question 171335: I need help with this problem.. It is find f(-2) given f(x) = -2xto the second power + 5x - 2
Click here to see answer by stanbon(75887)

Question 171337: Find f(1) given f(x) = 3x to the third power - x to the second power + 23
Click here to see answer by solver91311(24713)

Question 171337: Find f(1) given f(x) = 3x to the third power - x to the second power + 23
Click here to see answer by Mathtut(3670)

Question 171336: Find f(3) given f(x) = -3x to the second power +4x +11
Click here to see answer by solver91311(24713)

Question 171755: Find the range of the function defined by F(x)=|x|
Click here to see answer by stanbon(75887)

Question 171753: Find the domain of the function as defined by F(x)= (x+2)/(x-2)
Click here to see answer by Earlsdon(6294)

Question 171788: 8x+9y=11
Click here to see answer by jim_thompson5910(35256)

Question 171789: i have no idea how to solve this. it wants me to solve (-6,8). PLEASE HELP
Click here to see answer by Mathtut(3670)

Question 171810: Give the domain of the variable in each expression:
a.
5
-----
2n + 3
b.
5n + 1
------
7
c.
5n + 1
-------
7(2n + 3)
Click here to see answer by jim_thompson5910(35256)

Question 171792: x | y how do i solve this'[
3 |5.4
7 |12.6
12|21.6
Click here to see answer by checkley77(12844)

Question 172053: State the domain and range of y=x^2+1, Justify your answer
thanks for all your help!
Click here to see answer by Difficulty(2)

Question 172052: hello, I'm having problems with this math problem, your help would be very appreciated. Here it is...
The relationship between the selling price of a sleeping bag, s dollars, and the revenue at that selling price, r(s) dollars, is represented by the function r(s)=-10s^2 + 1500s. Evaluate, interpret, and compare r(29.95), r(60.00), r(75.00), r(90.00), and r(130.00).
Do I have to go through each one and substitute into the equation like so...r(29.95) = -10(29.95)^2 + 1500(29.95), solve, and compare ?

Click here to see answer by solver91311(24713)

Question 172097: Find the largest possible domain of
2/x-2
I know the domain is all real numbers, but 2... but how do you find the largest domain?
Click here to see answer by Mathtut(3670)

Question 172180: determine the horizontal asymptotes of the function
f(x)=(3x^2+4x-12/x^2-16)
Click here to see answer by jim_thompson5910(35256)

Question 172199: What is the appropriate domain and range of this cubic function in interval notation:
Click here to see answer by jim_thompson5910(35256)

Question 172197: What is the appropriate domain and range of this cubic function in interval notation:
Click here to see answer by Edwin McCravy(20054)

Question 172253: I am working on variations and I am having problems...please help
The question is:
I varies inversely with the cube of W.
If I = 32 when W = 1/2, find I when W = 1/3.
I come up with 2304 but the book comes up with 108, not sure where I am going wrong. I am using the formula I=K/W^3.
Thanks for your help!
Click here to see answer by Mathtut(3670)

Question 172306: Please help, the question is on variations:
I varies inversely with the cube of W.
If I = 32 when W = 1/2, find I when W = 1/3.
Thanks!!
Click here to see answer by Mathtut(3670)

Question 172416: determine the vertical asymptotes of the function
f(x)=(x^2-25/x+4)
Click here to see answer by jim_thompson5910(35256)

Question 172605: determine the end behavior and maximum number of turning points for the function
f(x)=-6x^5-3x^3+10x^2-3x+2
a. down to the left, down to the right, 6 turning points
b. down to the left, up to the right, 4 turning points
c. up to the left, up to the right, 5 turning points
d. up to the left, down to the right, 4 turning points
Click here to see answer by stanbon(75887)

Question 172701: Please help explain this function of a function: when
f(x)=sqrt(x+6) and
g(x)=sqrt(x-3)
Please explain to me why: f of g(x) otherwise stated as f(g(x))= f(sqrt(x+6)) instead of f(sqrt(x-3))???
Click here to see answer by Alan3354(69443)

Question 172782: Can you step me through this process?
Given the two functions r(t) = 3t + 4 and t(s) = 2s - 5, write r as a function of s.
Click here to see answer by vleith(2983)

Question 172863: The total value of quarters and nickels in a jar = 7.70. If the nickels were quarters and the quarters were nickels, the toal value of coins would be 4.90. Find the number of nickels.
Click here to see answer by Mathtut(3670)

Question 172881: Given f(x) = 5x - 1, find f(a + 3)
Click here to see answer by monika_p(71)

Question 173001: You and your friends want to open a company to sell "Math is fun" t-shirts. Each shirt costs $5 and you sell them for $9.50. Please show all work.
a.Write a function that represents how much money would you spend if you buy x number of t-shirts.
b. Write a function that represents the total money you would make selling x number of t-shirts.
c. Using part a and b. Write a function rule for your profit.
d. Create a function table for your above function. Is the function of direct variation or indirect variation? If so, write the function in form of a direct or indirect equation.
Can you please help me because I'm having a lot of problems with this type of algebra?
Thank you very much.
Click here to see answer by Mathtut(3670)

Question 172882: You want to enclose a rectangular lot with fencing. One side of the lot runs along the highway. The fencing along the highway costs $10 per foot and the rest of the fencing costs $7 a foot. The total money available for fencing is $6,000. The cost equation for the fencing is 7(2W+L)+10L = 6000, where L is the length of the lot and W is the width of the lot. The area of the lot, A, is given by the formula A=LW.
Can you step me through the following:
1. By writing the width as a function of the length, find the width of the lot, if its length is 100 feet (Width = ).
2. Write the area of the lot as a function of the length (A(L) = ).
3. What will be the area of the lot if the length is 100 feet (Area = )?

Click here to see answer by ankor@dixie-net.com(22740)

Question 173097: Use the Factor Theorem to determine whether x - c is a factor of the following function. Write in the form f(x) = (x - c)(quotient) if f(x) = 4x 3 - 3x 2 + 9 and c = 3.
Click here to see answer by stanbon(75887)

Question 173098: List the potential ratrional zeros of the following polynomial:
f(x) = 3x 7 - x 5 - x 3 + 2

Click here to see answer by jim_thompson5910(35256)

Question 173115: g(x)= ln(x-4)
Click here to see answer by stanbon(75887)

Question 173115: g(x)= ln(x-4)
Click here to see answer by user_dude2008(1862)

Question 173143: if f(x)=2x+3 and g(x)= 2x^2-3x+4, find f(g(x)).
Click here to see answer by jim_thompson5910(35256)

Question 173319: 1) g(x)=5^x Find the domain .
2) g(x)=e^x-5 Describe the transformations:
equation(s) for the vertical asymptote(s):
x-intercept in (x,y) form:
3)g(x)=log(x-3) same for #2
4)P=11R44LN x where x is the # of years after 2002

Click here to see answer by stanbon(75887)

Question 173491: 2x-4 divided by x-2
Click here to see answer by nerdybill(7384)

Question 173238: what is the domain of T(n)=2n-1?
also, for this function, what is the coefficient of n?
what does the coefficient of n tell you about the rate of change?
Click here to see answer by solver91311(24713)

Question 173563: Suppose you have a lemonade stand, and when you charge $1 per cup of lemonade you sell 50 cups. But when you raise your price to $2 you only sell 25 cups. Write an equation for the number of cups you sell as a function of the price you charge. Denote "C" for number of cups, and "P" for the price you charge. Assume the function is linear.
My try at it:
1P = C50
2P = C25
Click here to see answer by stanbon(75887)

Question 173568: 1. Which of the following are functions? The last two problems, i.e., b & c, are multi part relations consider all parts when determining whether or not these relations are functions. Explain your reasoning for a, b, and c.
a. f(x) = x + 5
b. f(x) = 3 if x>2 otherwise f(x) = -2
c. f(x) = 7 if x>0 or f(x) = -7 if x<0 or f(x) = 7 or -7 if x = 0
My solutions
a. Is a Function
b. Is a function
c. ?

Click here to see answer by stanbon(75887)

Question 173603: 4. For each of the relationships below, explain whether you think it is best described by a linear function or a non-linear function. Explain your reasoning thoroughly
a. A person's height as a function of the person's age (from age 0 to 100)
b. The probability of getting into a car accident as a function of the speed at which you drive
c. The time it takes you to get to work as a function the speed at which you drive
it's currently 4am and my brain refuses to cooperate, can't think straight...thanks in advance!!!
Click here to see answer by vleith(2983)

Question 173687: What is the best way to solve this equation -3x+y=12

Click here to see answer by Mathtut(3670)

Question 173714: make a table and graph to solve, x-2y=2, for the domain of {-2,0,2}.
Click here to see answer by Mathtut(3670)

Question 173778: The function H described by H(x)=2.75(x)+71.48 can be used to predict the height, in centimeters, of a woman whose humerus is x cm long.
Predict the height of a woman whose humerus is 37cm long.
I started this problem but I don't know if I am doing it right, what I did was this:
H(x)=2.75(x)+71.48
I plugged 37 in for x.
H(37)=2.75(37)+71.48
And I got H(37)=173.23
I just want to know if I have done this correctly. I feel very confused.
Click here to see answer by stanbon(75887)

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