1,744 Answered Questions for the topic Functions

Functions Math Help

10/21/16

What's f^-1(7)?
If f(x)=2x+1, then what does f-1(7)=?
Follows • 3
Expert Answers •2
Functions Math Help

10/21/16

What is f(x)=?
If f(x) is a linear function and f(2)=1 and f(4)=-2, then what is f(x)=?
Follows • 2
Expert Answers •1
Functions Algebra

10/20/16

Algebra - Function
I keep redoing this problem and cannot see where I am messing up, I know I am not getting the correct answer because it is not even an option listed (multiple choice problem).Given f(r) = 2r2-4r+3,... more
Follows • 3
Expert Answers •2
Functions

10/17/16

why is the k value in y=1/x defined as 1/k?
why is the k value in y=1/x defined as 1/k?
Follows • 2
Expert Answers •1
Functions

10/17/16

How do I start?
For the functions f(x)=9x-12 and g(x)=4x+5    a. (f+g)(x)    b. (f-g)(x)
Follows • 2
Expert Answers •1
Functions

10/13/16

How do I start?
if f(x)=(2x-4) and g(x)=(x-4) find (fg)(x) 
Follows • 2
Expert Answers •1
Functions

10/13/16

how do i start?
For the following of functions, find (a) (f+g)(x) and (b)  (f-g)(x)    f(x)=4x squared+7x-4    g(x)=-5x squared+4x-9
Follows • 2
Expert Answers •1
Functions

10/13/16

How do I start?
For the functions f(x)=9x-12 and g(x)=4x+5, find the following    (f+g)(x)  (f-g)(x) 
Follows • 2
Expert Answers •1
Functions

10/11/16

algebraic rule for 0,10 2,8 4,6 6,4 8,2 x is first set of numbers, y is second set
                               x                  y                               0                 10                               2                  8                               4        ... more
Follows • 2
Expert Answers •1
Functions Math Help

10/07/16

which of the following represents f(x)?
If f(x-3)=x2+x+1, which of the following represents f(x)?
Follows • 4
Expert Answers •3
Functions Math Help

10/07/16

which of the following is equal to f(-2)?
If f(x-5)=x2-5, which of the following is equal to f(-2)?
Follows • 2
Expert Answers •1
Functions Math Help

10/07/16

What's the value of f(6)?
f(x)=ax+b   In the function above a and b are constants. If f(0)=3 and f(3)=-8, what's the value of f(6)?
Follows • 3
Expert Answers •2

10/07/16

Find where the function is increasing and decreasing
The derivative of a polynomial is f'(x) = (x-3)^2 (x+7)
Follows • 2
Expert Answers •1

10/05/16

Begging you to help me! Work due in 10 min
1. Write a function f(x) that represent a gym membership cost of $20 per month for x months. 2. Explain how a fee increase of 25% can be represented for the gym membership. Use g(x) for the new... more
Follows • 2
Expert Answers •1
Functions

10/04/16

The Coughlin family is driving from Boston to Chicago. The total distance of the trip is 986 miles and each hour they will drive 65 miles.
Write an equation to represent the number of remaining miles y after driving any number of hours x.
Follows • 2
Expert Answers •1
Functions

09/25/16

At an amusement park, a person spends $30 on admission and food, and then goes on r number of rides that cost $2 each
Write and equation in both standards and function notation forms to represent the total amount spent at the amusement park if a person goes anywhere from 0 to 5 rides
Follows • 2
Expert Answers •1
Functions Limit

09/20/16

Find the two functions f and g such that the lim x -> 0 f(x) and lim x -> 0 g(x) do not exist, but lim x -> 0 [f(x)+g(x)] does exist.
Even I split   lim   [f(x)+g(x)]   into   lim f(x) + lim g(x) x→0                              x→0         x→0   It does nothing as both   lim  f(x) AND lim  g(x) do not exist x→0          ... more
Follows • 2
Expert Answers •2
Functions

09/16/16

How do you know if an input output is a function or not?
I know how to get the domain and the range but no matter what i look up it does not help me understand how to tell if an input output is a function or not!
Follows • 2
Expert Answers •1

09/14/16

Function Word Problem
The telephone company charges a fee of $6.50 per month for the first 100 message units and an additional fee of $0.06 for each of the next 100 message units. A reduced rate of $0.05 is charged for... more
Follows • 2
Expert Answers •1
Functions

08/25/16

Given the function h(b)=5b-3 , solve for h(b)=-1
I thought the answer was -8. Although I was wrong.
Follows • 2
Expert Answers •1
Functions

08/22/16

Determine whether the following function is linear - Explain/Show Work
f(x) = x/2 + 3
Follows • 2
Expert Answers •1

08/21/16

Piecewise functions
The rates for a parking garage are $3 per half hour and $8 maximum for 12 hours. Write a piecewise function for the rates at the parking garage.
Follows • 2
Expert Answers •1
Functions

08/10/16

Let g(x)=2x-4 and evaluate g(1/3)
Let g(x)=2x-4 and evaluate g(1/3)
Follows • 3
Expert Answers •3
Functions

08/08/16

Find the function
If f(1)= 1 , f(2)=2, f(3)=3 , f(4)=4, and f(0)=24 Find f(5) 
Follows • 2
Expert Answers •1
Functions Domain And Range

08/02/16

Choose the function
h(x)=x^2+4   whats  the domain of the function!   what's the range of the function?
Follows • 3
Expert Answers •2

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.