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Tutors Answer Your Questions about Functions (FREE)
Question 136111: please i need urgent help here. pleaseeeeeeeeeeee
Steve owns a hotdog stand. He has found that sales of hot dogs average 47,000 hot dogs a year when the hot dogs sell for $2.50 each. For each 50 cent increase in the price, the number of hotdogs sold drop by 5000. What price per hot dog should Steve charge to realize the maximum revenue?
Click here to see answer by oscargut(682)   |
Question 137265: This is not from a text book, just handout homework. All that is given is "State the domain of the following:
g(x)= 5x/((x^2)+ 25)
I tried Factoring the bottom into (x+5)(x-5) but that doesn't work -> (x^2)-25
Click here to see answer by oscargut(682) |
Question 137451: For some reason I just cannot grasp the concept of the domain and range of functions. Can someone please help with this?
Given f(x)=4x^2-2x-6 and g(x)=2x-3, find the domain of (f-g)(x) and the domain of (f/g)(x). Thanks!
Click here to see answer by oscargut(682) |
Question 137469: I have tried solving this question myself without out a book or notes and cannot complete any of the answers, I am looking for an example to follow from and cannot find one so i am hoping this will help. The question is find the domain of the function such as y=the square root of 7x-2. as far as I can tell the problem should come out to be 0 is less than or equal to X which is less than or equal to 2/7.
Click here to see answer by ankor@dixie-net.com(6693)  |
Question 138111: Please help me with these I'm really lost. My teacher does not care who learns or not and keeps teaching without answering questions.
1) State the domain of the following:
a) g(x)=(5x)/(x^2+25)
b) f(x)=(square root of X+6)
c) K(f)=5t^2-6t+2
d) K(x)=(3x-3)/(x+2)
e) m(x)=5x-7
Click here to see answer by vleith(1977)  |
Question 138710: "A company calculates it's profit by finding the difference between
revenue and cost. The cost function of producing x hammers is C(x) =
4x+170. If each hammer is sold for $10, the revenue function for
selling x hammers is R (x) = 10x."
1.) How many hammers must be sold to make a profit?
2.) How many hammers must be sold to make a profit of $100?
Click here to see answer by jim_thompson5910(13794) |
Question 140831: hello y'all thanks for the previous helps; I really appreciate it. pls, I need help in this:
A company that produces computers terminals analyzes production and finds that they should make a profit P(x) in dollars for selling x terrminals per month, where P(x)= -0.1x^2+160x-20000.
a) find using calculator how many terminals should be sold per month for the maximum profit (make your window x min 0, x max 1500, y min -21300, y max 50000)
b)The maximum profit.
Click here to see answer by stanbon(26297) |
Question 141237: I have to look at a table and decide if its a function or not. The table looks like this:
x 4 -3 0 -3 2 3
y 7 -5 2 -1 5 -2
So, how do i decide if this would be a function or not, just by looking at the table given
Click here to see answer by stanbon(26297) |
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