Tutors Answer Your Questions about Functions (FREE)
Question 133968: It's been a few years since high school and I am taking an online algebra course and am having difficulty remembering how to do function fºg and the textbook is very vague. This is the problem:
Find the domain of the composite function fºg
f(x)=√x; g(x)=4x+4
Click here to see answer by Earlsdon(6294)  |
Question 134221: Hello-Please help!
I am just not grasping the concept of functions.
Find the requested value.
f(3) for f(x)={3x+1, if x<1
3x, if 3 (less than or equal to sign)x (less than or equal to
sign) 8
3-5x, if x>8
Everything after the equals sign is enclosed by one bracket. THANK YOU very much!
Click here to see answer by jim_thompson5910(35256) |
Question 134871:
Thanks for the answers for the previous questions. Pls, am having difficulty with these ones. I need your help. it's very urgent
4x^3 - 5x. is it even, odd, or neither?
-4x^2 - 5. is it odd, even or neither?
f(x) = -4x divided by |5x|. is it odd, even, or neither?
-2x^3 divided by 7x^2 + 8. is it odd, even, or neither?
f(x)= 8x^3 + 3. is it odd, even, or neither?
Click here to see answer by stanbon(75887) |
Question 135370: I have no Idea were to start with this problem, can you please help with this function?
In 1990, the life expectancy of males in a certain country was 70.2 years. In 1997, it was 72.7 years. Let E represent the life expectancy in year t and let t represent the number of years since 1990.
The linear function E(t) that fits the data is
so fair I came up with
E(t)= _t +_.
please help!!
Click here to see answer by stanbon(75887) |
Question 135515: Function f is one-to-one. Find it's inverse.
f(x) = 3/5x-4 (3 devided by 5x-4).
I thought you were supposed to flip flop the problem which would make it:
f(x) = 5x-4/3 (5x-4 devided by 3) That was incorrect.
Can you please help? Thank you.
Click here to see answer by vleith(2983) |
Question 135966: Please help me with these...thank you
The function, p(d) = 1 + d/33 gives the pressure, in atmospheres (atm) at a depth d in the sea (d is in feet). Note that p(0) = 1 atm, p(33) = 2, and so on. Find the pressure at 110 feet.
The pressure at 110 feet is ? atm.
(type an integer or a simplified fraction)
Click here to see answer by solver91311(24713)  |
Question 135967: Please help me with these...thank you
The function, p(d) = 1 + d/33 gives the pressure, in atmospheres (atm) at a depth d in the sea (d is in feet). Note that p(0) = 1 atm, p(33) = 2, and so on. Find the pressure at 110 feet.
The pressure at 110 feet is ? atm.
(type an integer or a simplified fraction)
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 136113: please i need urgent help here. pleaseeeeeeeeeeee
The height of an object propelled upward from a height of 128 feet at an initial velocity of 112 feet per second is given by the equation h = -16t2 + 112t + 128. After how many seconds does the object hit the ground?
Click here to see answer by vleith(2983) |
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(2103)  |
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(2103) |
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