1,744 Answered Questions for the topic Functions

Functions

03/19/18

consider the function f(x)=4+x
what is f (-2+8)?   what is f(-2) +f(8)?
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03/19/18

Find the inverse of the one-to-one function. f(x) = √x + 8
Show all steps. The x+8 is in the radical. 
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03/19/18

Find the inverse of the one-to-one function. f(x) = 3/2x + 1
Show step by step. 
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03/17/18

How to solve this?
Identify the slope of the line that passes through the points of the parabola given by y = x2 + 4x + 3 when x = 0 and x = 4. I know the answer is 8, but I need an explanation.
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Functions Maths Math Help

03/11/18

function notation
find g(x-1) when g(x) = x^2 + 2x + 3
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Functions

03/10/18

Find the value given that f(x)= 7x+6.
Find the value given that f(x)= 7x+6. Simplify compeltely.  f(b)- f(0)
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Functions

03/09/18

f(5) if f(x)=4x what is the fraction value
find the function value
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Functions

03/09/18

F is a function such that f(x) = 3 ÷ 2x + 5. SHOW that ffinverse (x) =x
I am really stuck with this sheet of function questions pls help    
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Functions

03/09/18

Find the below function
H (x)=2x-3/3. F(x)=2x-3/3 Find h(f(x))
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Functions

03/08/18

evaluating functions without x?
For example it says     f(x) = 2,     x≥3     a. find f(4)   anyone know how i do this when there's no X?   all the other ones have X in it
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Functions

03/07/18

suppose f(x)=x^2. What is the graph of g(x)=f(3x)?
HELP! OH MY GOD JUST HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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03/03/18

Graph and find the domain and range of the function
f(x)=(1/4)x-1   My class is in the functions section now but i can't figure out how to solve this problem. I've tried using multiple examples of the functions we've gone over but none seem to... more
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Functions

03/01/18

for g(x)=3x-12x+6 find the values of the x intercepts
find the values of 3x2   - 12x+ 6 how do i find
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02/28/18

if f(x^2+2)= x^4+10x^2+4, what is f(x^2-2)
if f(x2+2)= x4+10x2+4, what is f(x2-2)?
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Functions Function Variables F(x)

02/28/18

if (x^2+2)= x^4+10x^2+4, what is f(x^2-2)
 if (x^2+2)= x^4+10x^2+4 what is f(x^2-2)
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Functions

02/21/18

Is y = – 2 x – 3 a function
I need help with this question
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02/18/18

Find the domain of the function. h(x) = x-2/x^3 - 49x
h(x)=x-2 over x to the 3rd-49x. Find the domain. 
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02/18/18

h(x) = (x^2+2)/(x-5) if x cannot equal 5 and x+6 if x = 5 ; h(5)
Evaluate the piecewise function at the given value of theindependent variable.
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02/17/18

such that h(t)=400−16t^2. Express t as a function of height h, and find the time to reach a height of 300 feet.
This i s a word problem asking for t(h) to be expressed as a function and find the time to reach a height of 300 feet  
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02/13/18

Determine whether two functions are inverses of each other
a) f(x) = 2x+3 g(x) = x-3/2   f(g(x))= ? g(f(x))= ?   f and g are inverses of each other OR  f and g are not inverses of each otherb) f(x)= -6x g(x)= -6x   f(g(x))= ? g(f(x))=?   f... more
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02/12/18

Price-Demand equation expressed for revenue as a function of price
This is the Price Demand equation they gave 20p+x=25   Heres what I got for the function of price. But I dont think I am right. R(p)=p(25-20p)   It also wants an expression for revenue... more
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02/11/18

it is asking to plot the point (3, f(3))
This is a function of x and is asking to plot this point but I am confused.
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Functions

02/04/18

Solve the following: a. If j(x) = 3x - 1 b. Graph j(x)
c:Find the Domain and Range d. Find j(-3) and j(1) e. Find the inverse and graph f. The inverses are reflected over what line?
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Functions Maths

02/04/18

Help with function question
For all values of x, f(x) = 3x+k, where k is a constant. Given that ff(3) = 7, find the value of k. Cheers for any help :)
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Functions

02/03/18

functions question
Checking Account. To keep a checking account, a local bank charges $10 per month plus 5¢ per check. Write an equation for the monthly charge P in terms of the number of checks n written per month. 
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