1,752 Answered Questions for the topic Functions

12/07/16

After 6 hours, how much snow has fallen? And if your walkway is 2ft by 8ft, how much snow do you have to shovel to clear it off (after all the snow has fallen)
Now's the time for snow to fall. On December 27th (during winter break), it snows for eight hours. The first half hour, it snows at a rate of 1 inch per hour. The next 2 and a half hours, it snows... more
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Functions Algebra

12/06/16

Algebra help needed stat.
A birthday party is being held for 20 people at an arcade. It costs $5 a person to provide food for everyone, and each game costs $1 to play. Assume that each person at the party plays the same... more
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12/04/16

Zeros of a Polynomial Function
Determine all the real zeros of f(x)= x4-x3-5x2+3x+6    I'm not sure how this would be factored out, thank you in advance
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Functions

11/29/16

true or false? A function has exactly one output for every input
hi can somebody help me with these simple true or false questions I need to learn them for my final exam   a. |𝑥| = −𝑥 if 𝑥 is a negative number.b. A function has exactly one output for every... more
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Functions Inverse Functions

11/28/16

Inverse Functions
Please help, show work, and explain in detail   h(x)=-3
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11/24/16

Define functions f, g, h, all of which map from R -> R. (Discrete Mathematics, Functions)
f(x) = -(x - 1)g(x) = 2x2h(x) = 3x + 1 a. What is (f ο g)(-2)?b. What is (g ο f)(-2)?c. What is (f ο h)-1(3)?d. What is (f ο g ο h)(1)?e. What is (h ο h-1)(π)?
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11/23/16

How to create the function?
create a rational function with a slant asymptote of y=x+8 And vertical asymptotes x=2 and x=-1
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11/20/16

Dissolving Sugar
At 3pm on a particular day, 20kg of sugar is placed in a container of water and begins to dissolve. After t hours, the amount,x, of undissolved sugar is given by the formula x=20rt. After 4 hours... more
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Functions Math Help

11/18/16

What is the value of h(g(3))?
A function g satisfies g(5)=3 and g(3)=0, and a function h satisfies h(3)=-2 and h(0)=5. What's the value of h(g(3))?
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11/18/16

If g(x)= -2(x^2-6x-12)+3(k-x) and g(x) is evenly divisible by x, then what's the value of k?
If g(x)=-2(x2-6x-12)+3(k-x) and g(x) is evenly divisible by x, then what's the value of k?
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Functions

11/17/16

Is the function a polynomial function
f(x)= 7-x^4/6
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11/15/16

Rational Function
given f(x)= t3-2t2-8t/t2-4  find the domain, asymptotes, holes and intercepts.   I know that to find the x intercept you set y=0 and solve for x but I am unsure how to isolate x when the... more
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11/13/16

A cubic function is a polynomial of degree 3; that is it has the form f(x)=ax^3+bx^2+cx+d, where a does not equal to zero.
(a) Show that a cubic function can have two, one, or no critical number(s). Give examples and sketches to illustrate the three possibilities.(b) How many local extreme values can a cubic function... more
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11/12/16

Solve the following word problem.
A movie theater is reordering popcorn buckets for the concession stand. The cost for buckets (b) decreases if they are purchased in bulk. Additionally, the movie theater gets a $2.00 discount on... more
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11/12/16

Solve the following word problem.
The speed (in feet per second) of a ball tossed up in the air can be represented by the function v(t)=32|t|+5 where t is time in seconds. Based on this function, at what time would the speed of the... more
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Functions Function

11/12/16

Calculate the correct matching value for the function below.
For f(x) = {-3x2+2, x<-1}               {x+7, x≥-1}        and x = -2, find y.
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Functions Trigonometry Cosine

11/11/16

Cosine function
a cosine function has an amplitude of 1/3, period of pi/3, horizontal shift of -2pi, and vertical shift of -3.  What is the y-value of the negative function when x= pi? 
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Functions Function

11/11/16

Calculate the correct matching value for the function below.
For f(x) = {-3x2+2,  x<-1}                  {x+7,  x≥-1}             and x = -2, find y.
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11/10/16

Write the following function as a power function in the form y=ax^n. Use fractional exponents.
y=4x3√x2
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11/09/16

Change the following function to a power function in the form y=ax^n. Use fractional exponents if necessary.
y=6/√x7
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Functions

11/09/16

is the functiom f(x) = -x^3 + 5x even, odd or neither?
how can you tell if a function is even or odd or neither?
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Functions

11/08/16

what is the value of f (3) if: f(0)=-1, f(2)=3, f(5)=9, f(6)=1.
the function f (x) is linear
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Functions

11/08/16

how many of each type of pie were sold?  
A new bakery in a small city sells banana chocolate pies for $6.99 and pecan pies for $10.99.  The total number of pies sold on a busy Friday was 36. If the amount collected for all the pies that... more
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11/06/16

Find the value of each function below. Estimate any irrational answers to 2 decimal places.
y(3)=750e0.16x
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11/06/16

Calculate the value of the function below. Estimate any irrational answers to 2 decimal places.
y(2)=In(4x)
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