989 Answered Questions for the topic Functions

Functions - Average Rate of Change - stuck on question for 2 hours please help

For the following exercise, find the average rate of change of each function on the interval specified for real number h in simplest form.a(t) = 1 / t + 4 on [9, 9 + h] The textbook gives the... more

Write an equation to represent the exponential function.

For the x-values, it shows the numbers -1, 0, 1, and 2. For the y-values, the numbers are 3/4, 3, 12, and 48. I don’t understand this because I don’t understand what the formula is.

Function zero problem

find all rational zeros of this functionf(x) = 3x4 + 16x3 - 59x2 - 400x - 400

Find all zeros of the functions

What are all the zeros of these two functions?x(x-3)2(x-3)(x+9)3

functions domain and range

For each function below, state domain and range, name the intervals where function is increasing or decreasing, and describe end behavior.f(x) = 1/2 x2y = x2 + 3y = -3x2

10d

3.3 Graphs of Functions

If the CPI for fuel oil stood at 91 at the beginning of 1999, approximately what was it at the beginning of 2000?

14d

Direct Variation

A swimmer can cross a lake in 15 minutes and 35 seconds while traveling 3.85 miles per hour. If the swimmer wants to cross the lake in 13 minutes,how fast must he swim?

25d

Make an equivalent ratio table for each class to represent its solution. Each table should show at least three equivalent ratios. Make sure to indicate which ratio table belongs to which class.

Two sixth grade science classes are making saltwater solutions. The first class (Class A) is using a ratio of three parts salt to five parts water. The other class (Class B) is using a ratio of two... more

29d

Function slope graph

If f(x)=3x+5 and g(x)=9x-2. what is the slope of the graph of the function (f-g)(x)

29d

trigonometry functions

if f(x)=cos2x and g(x)=sin2x, what is (f+g)(pie/16)?

29d

Advance Function 12

After college you invest $8500 at 7.2% a compounded quarterly. estimate the instantaneous rate of change at 10 years.

12/20/19

Find the demand and supply equation

When the price is 10, Demand 100, Supply 120.When the price 7 Demand 130, Supply 90. 1)Find the linear price function.2) Find the demand function.3)Find the linear revenue function ( R(x) ) ? 4)If... more

12/19/19

Is this a linear or quadratic function?

y = (x+1)(6x-6)-6x^2 Linear or quadratic? What's the linear term? Constant term?

12/17/19

Precalculus Functions

If the function y= -8 + 4sin2(theta + 30°) is shifted down 4 units, right 15°, stretched vertically by a factor of 2, and compressed horizontally by a factor of 2, what would the new equation be?I... more

12/14/19

How do I solve these Calculus problems?

I know its kind of a lot but I'm really struggling and I need help, thank you! Find the equation of the tangent line to the inverse at the given point F(x)= 7x+sin(2x) @(0,0) F(x)=... more

12/14/19

How do I solve these derivative problems?

Find tangent line at point (4,2) of the graph of f^-1 (inverse f(x)) if f(x)=x^3+2x-8?Find the equation of the tangent line to the inverse at the given pointa) f(x)=x^3+7x+2 @(10,1)b) f(x)=... more

12/14/19

How do I solve these derivative problems?

Find tangent line at point (4,2) of the graph of f^-1 (inverse f(x)) if f(x)=x^3+2x-8?Find the equation of the tangent line to the inverse at the given pointa) f(x)=x^3+7x+2 @(10,1)b) f(x)=... more

12/11/19

After how many seconds does the ball hit the floor?

The function  gives the height (in feet) of a ball dropped from the height of  after t seconds. A ball is dropped from a height of 8 feet. After how many seconds does the ball hit the floor?

12/06/19

The output is the cube of the input

I need help answering this problem

12/05/19

Inverse trigonometric functions

I can't seem to get the right answer for this question, is there anyway I can some help?The functionH(θ) = 246 sin(θ − 90°) + 296models a person's height in feet on the Singapore Flyer Ferris wheel... more

12/04/19

Susan decides to take as a transcriptionist so that she can work part-time from home.

Susan decides to take as a transcriptionist so that she can work part-time from home. to get started, she has to buy a computer, headphones, and some special software together cost her $1000. The... more

11/28/19

Function Operations: How do I divide f(x) = 2x^2 + x − 3 by  g(x) = x − 1?

Let f(x) = 2x2 + x − 3 and g(x) = x − 1.Find  and state its domain.The answers are:; domain is the set of all real numbers except 1x − 1; domain is the set of all real numbers; domain is the set of... more

11/21/19

Trigonometric Function

Use the​ power-reducing formulas to rewrite the expression as an equivalent expression that does not contain powers of trigonometric functions greater than 1.17sin4x

11/21/19

Let y=square root of 1-x Give an equation for: (a) stretched horizontally by a factor 2. (b) compressed horizontally by a factor 2.

if i want to stretch it horizontally by 2 i divide only the x by 2 or all the inner part like (1-x)/2 and for compression the same like i should multiply x only or all of it
1 3 4 5 6 7 40

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