Questions on Algebra: Functions, Domain, NOT graphing answered by real tutors!

Tutors Answer Your Questions about Functions (FREE)

Question 61984: Use your calculator to evaluate the following expression if x = 1.07, y = �4.12, and z = �3.76. Round your answer to the nearest tenth.

z2/xY
Click here to see answer by stanbon(75887)

Question 61983: add 4/10+1/10
Click here to see answer by checkley71(8403)

Question 62067: A frozen turkey is placed in an oven preheated to a temperature of 425 degrees F. The temperature of the inside of the turkey after t minutes is given by M(t)=425(1-e^-kt), where k is a constant. The value of k is 0.047. How long will it take the inside of the turkey to reach a temperature of 400 degrees?
Click here to see answer by stanbon(75887)

Question 61980: For the following set, which number has the largest absolute value?
4, �1, 12, �20, 19, 0

Click here to see answer by 303795(602)

Question 62066: The number of deer in a wildlife preserve is given by the function D(t)=184(1.1)^0.5t, where t is time in years. How long does it take the deer population to triple?
Click here to see answer by stanbon(75887)

Question 62065: Could someone please help me?
A certain model car depreciates according to the function V= N*e^-0.23t, where N is the cost of the car when it is new and V is its value t years later. How old is a car of this model if it cost $24000 new and is now worth $6000?
Click here to see answer by Nate(3500)

Question 62064: I have no idea how to work this problem, could someone help me?
In an amplifier, the power gain P is given by the function:
P= 10 log Pout/Pin
where Pin is the power input in watts and Pout is the power output in watts. If an amplififier has a power gain of 10 watts and the output power is 7 watts, find the input power.
(added note the out and in words next to the P are suppose to be lower than the P, but I don't know how to show it on here. so it would be the opposite of using the ^ sign to do what I mean.)
Click here to see answer by Nate(3500)

Question 62062: I need help solving this word problem,
The distance r to a star is measured in parsecs, but astronomers like to use the Distance Modulus M given by the formula M= 5log r-5. If a star is 52 parsecs away, what is its distance modulus?
Click here to see answer by stanbon(75887)

Question 62061: I am not sure what this problem means so I don't know how to answer it, could someone help me please?
The number e is the value of x in the equation y =2^x, where the slope of the line just grazing the curve at the point (0,1) equals 1. Is this true or false?
Click here to see answer by venugopalramana(3286)

Question 61979: Evaluate. (15 – 5) � [(12 � 2 � 2) – 2]
Click here to see answer by rchill(405)

Question 62168: Find the vertex, axis of symmetry, maximum value or minimum value, x and y intercepts.
f(x)=-3/11(x-7)2-9
Click here to see answer by stanbon(75887)

Question 62168: Find the vertex, axis of symmetry, maximum value or minimum value, x and y intercepts.
f(x)=-3/11(x-7)2-9
Click here to see answer by Edwin McCravy(20054)

Question 62155: I need some help on this one. I am not sure it is in the right area.
Graph each quadratic function:
f(x) = 1/2x^2 - 2

Then of course has to be graphed. Thanks for your help.
Click here to see answer by ankor@dixie-net.com(22740)

Question 61599: The simple intrest I on a principal of P dollars at an intrest rate R for time T in ten years is given by I = PRT find the simple intrest on a principal of $6000 at 3% for 2 years.
Click here to see answer by 303795(602)

Question 62198: Please help me solve this problem!!!
Volume of a rectangular prism...

Solve for h V=lwh

thanks for your help
Click here to see answer by tutorcecilia(2152)

Question 62184: Find the formula for the inverse of f(x)=(x+7)cubed
Click here to see answer by ankor@dixie-net.com(22740)

Question 62271: Find the domain of f(x)= (2x + 3)/(2x^2 - 3x - 27). Leave your answer in interval notation.
Click here to see answer by funmath(2933)

Question 62369: I really need some help on this one.
Let the function of f be defined by the equation y = f(x), where x and f(x) are real numbers. Find the domain of each function.
f(x)= x+2/x-1
I hope that is clear enough to explain the question. Thanks in advance
Click here to see answer by funmath(2933)

Question 62358: How Do you "Find the Slope of the graph of the linear function f"?
Click here to see answer by funmath(2933)

Question 62167: Find the vertex, axis of symmetry, maximum value or minimum value, x and y intercepts.
f(x)=-3/11(x-7)2-9
Click here to see answer by stanbon(75887)

Question 62408: please assist ( anyone please help )
Bush juices (BJ) Lts and Wild Tates (WT) Ltd. Produce and sell natural fruit juices. BJ, at the beginning of October 2006, conducted a study to establish its market share vis � a-vis that of NT, the only other competitor in natural fruit juice market. The study-involved observation of loyalty shifting habits of a total pool of 19200 natural fruit juice consumers, distributed equally between the two companies. Records by the end of the month indicated that 2400 consumers had switched from BJ to WT and half of WT �s had shifted to BJ. The total consumer pool is expected to grow to exponentially, at the rate of 10 % per month, up to the end of June 2007 after which it is expected to stabilize with negligible growth thereafter Each consumer of natural fruit juice, generates an average monthly revenue of 400 $ to the selling company.
Assuming that the October 2006 shift pattern persists into the future months, determine the expected revenue generated by each company during
1. November 2006
2. December 2006
3. Any month at equilibrium

Click here to see answer by stanbon(75887)

Question 62554: Can you please tell me the Domain of this equation?
g(x)=squareroot(x+2)
I'm not familiar with writing the square root sign (the check mark) so I wrote the word out. Thanks
Click here to see answer by funmath(2933)

Question 62552: Please help me find the Domain of this equation.
h(x)=x^3-4x+5
Thanks in advance
Click here to see answer by funmath(2933)

Question 62555: Find the Domain and Range of the function: 1/x^4.
Click here to see answer by uma(370)

Question 62555: Find the Domain and Range of the function: 1/x^4.
Click here to see answer by Edwin McCravy(20054)

Question 62556: Find the Domain of y=(5+2x)/(x+5)
Click here to see answer by uma(370)

Question 62558: Given f(x) = x^2-3 and g(x)=2x+1, find:
(f/g)(-Square root of 3)
Click here to see answer by Nate(3500)

Question 62580: Let f(x)= 2x-3 and g(x)= x^2+2x find the following expressions

f(1)
g(-2)
f(3a)
f(3)+g(4)
Thanks for the help.

Click here to see answer by funmath(2933)

Question 62557: Find the Domain of the function:
(x^4 - 2x^2 +7)/ (3x^2 -10x -8)
Click here to see answer by funmath(2933)

Question 62595: Pls I need help with this also
Specify the domain and range of the relation
x^2/18+(y-4)^2/4=1/2
Click here to see answer by venugopalramana(3286)

Question 61362: I want to make sure i am doing this correctly... Question is: Determine ALL REAL ZEROS (and multiplicities for them) for the following polynomial functions.
f(x)=x^4-6x^3+13x^2-24x+36
I went to the tutor here at school, and it seemed like the kid did not know what the correct answer would be... I have..
Real Zeros= x=3
but i don't think i am right.. Please help.. Thanks again..

Click here to see answer by 303795(602)

Question 62647: Please help me find the values for the functions below given the following piece wise function.
F(x)=
2x if x <-3
x + 5 if -3 <= x < 5
10-3x if x >= 5

f(8)
f(-8)
f(1)
Click here to see answer by stanbon(75887)

Question 62652: Given that f(x)=│x│, describe (or draw)how the following transformations change f(x).
1. g(x)=-│x│
2. h(x)= │x+3│
3. j(x)= │x│+3
Click here to see answer by stanbon(75887)

Question 62688: 9x _ 7 _ 5x _ 3
Click here to see answer by checkley71(8403)

Question 62685: _3x _ 27
Click here to see answer by checkley71(8403)

Question 62695: A=1/2 h(B _ b) (for b) Area of a trapezoid
Click here to see answer by joyofmath(189)

Question 62697: The sum of two consecutive integers is 145. Find the two
integers.
Click here to see answer by joyofmath(189)

Question 62696: Rose�s garden is in the shape of a trapezoid. If the height of the trapezoid
is 16 m, one base is 20 m, and the area is 224 m2, find the length of the other base.
Click here to see answer by checkley71(8403)

Question 62701: Jose has savings accounts for each of his five children.
They contain $215, $156, $318, $75, and $25. Find the median and the mean
amount of money per account.
Click here to see answer by checkley71(8403)

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