1,748 Answered Questions for the topic Functions

Functions

10/02/14

Function Problem
Suppose that the functions g and h are defined for all real numbers x as follows.   g(x)=2x+3 h(x)=4x   Write the expressions for (g+h)(x) and (g-h)(x) and evaluate (g•h)(-1)
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Functions Algebra 1

10/02/14

function help!!
Let f(x)=-5x-1 and g(x) =x^2-5 find (f*g)(-6)
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10/02/14

A student gets paid to deliver newspaper after school. She earns $25 a day, plus an extra $0.75 for each newspaper
A student gets paid to deliver newspaper after school. She earns $25 a day, plus an extra $0.75 for each newspaper she delivers and $5 for each new customer she signs up for delivery. If d=days,... more
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Functions

10/01/14

how much does each concert ticket cost
3 tickets equal $169.50 5 tickets equal $267.50 9 tickets equal $463.50 12 tickets equal $610.50 Total cost include service fee and only one time service fee
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10/01/14

Which of the following is the function C(d) if C^-1 (e) = 10e + 3?
Which of the following is the function C(d) if C^-1 (e) = 10e + 3? A.) C(d) = d/10-3 B.) C(d) = 10d - 3 C.) C(d) = d+3/10 D.) C(d) = d-3/10
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09/28/14

Families of polynomial question?
Given a function g(x) such that g(x^2+2)=x^4+5x^2+3, determine g(x^2-1). The answer is g(x^2-1) = x^4 -x^2 -3 How do I get this?
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Functions

09/25/14

Word Problems
An open rectangular box (no top) with volume 9 cubic meters has a square base. Express the surface area S of the box as a function of the length x of one of the sides.   s(x)=?
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Functions

09/25/14

How can you find function for input output table?
x values are 300 and 1,500 Y values are 366 and 510 How do you find the function? 
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Functions

09/24/14

inverse of function y=5^x
inverse of the function               y=5^x
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09/22/14

Consider f(x) = 3^x Show that a horizontal translation 2 left is equivalent to a vertical stretch by a factor of a
Math test tomorrow, one of the review questions???
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Functions

09/22/14

If Amy weighs 120 pounds at sea level, how much will she weigh on Pike’s Peak, which is 14,110 feet above sea level?
The formula for this is W(h)=m(4000/4000+h)^2
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Functions Algebra Parabola Vertex

09/21/14

Select the x-coordinate of the vertex of the parabola defined by the function f(x) = -3x2 + 7x + 2.
i need to find the vertex of the parabola and i am having trouble finding the answer the options are   a)-3/7 b)2 c)7/6 d)-7/3
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09/15/14

let f(x) = 2x-1 for <5 and x^2-3 for x=5
Then it says determine f(-2) f(0) f(1) f(5) and f(10) Im not sure how to work this
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Functions

09/13/14

z=F(f(x)) double function?
what's the name of this function?
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09/08/14

I can't seem to figure out this problem. Can someone please help me and show me how to solve this!? IM SO LOST show me how to solve this!? IM SO LOST
Starting with the parent function f(x)=x2, Braylin adds a positive k to f(x) to form a new function, g(x) = f(x) + k. The result will be that his graph will _____ k units _____.Select 1 answer for... more
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Functions

09/07/14

if f(x)=2x+1 and g(f(x))= 4x^2+4x+3 what is g(x) given that g(x)=ax^2+bx+c
We have to find the function g(x) given the g(f(x)) composite function.      (If f(x)=2x+1 and g(f(x))= 4x^2+4x+3 what is g(x) given that g(x)=ax^2+bx+c)
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Functions

09/07/14

Determine if following functions are convex, concave, quasiconvex or quasiconcave? Explain please
1. y=x2 2. y=arctanx 3. y=ex 4.y=3x+2 5.y=-x4 6. y=x-sinx
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Functions

09/04/14

How do i find x?
How do i find x?     cos2x=0
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09/02/14

How to Solve Compositional functions (HELLPP)
For the Given Functions:   f(x)=x^4 + 5x g(t)= 7t^3   Find the composite functions:   f x g(t)= g x f(x)=  
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Functions

09/02/14

how do i do this?
f(1/x)=x+sqrt(1+x2) find f(x)  
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09/01/14

Write an equation of the line perpendicular to the graph of x=3 and passing through D(4, -1)
I am completely stumped on this question and would really appreciate if someone could explain this for me! 
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Functions

08/25/14

how to solve a function.(1)=x/2+3
also (z)=4+7x i need the answer to this one to
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08/20/14

How to I graph transformations of points in a composition of functions?
How to I graph transformations of points in a composition of functions? A graph with three points (-3,2) (-2,-2) and (4,1) is given, which is f(x). h(x) = -f(x+2) is what we should transform. When... more
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08/19/14

Identify the domain and range of function
y=(1/-x) - 2   y=(-4/x-4)+4
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07/31/14

A super hero leaps from a building to capture a villain. The data from this leap is shown below
Time(seconds) .75 | 1.5 | 2 | 2.25 | 2.75 | 3.5 Height(feet) 108 | 119 | 116| 112 | 97 | 59 1. What type of function best models this data linear exponential quadratic or other 2. Use a... more
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