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

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Question 1078320: I have to find x (according to documentation x=196) I just don't understand how.
0.75(2500-x)^0.5+0.25(900+396)^0.5
Thank you
Click here to see answer by ikleyn(52781)

Question 1078674: f(-14) if f(x) = -2x -5
Click here to see answer by ikleyn(52781)

Question 1078668: Let f be the function defined by
f = {(−3, 8), (−2, 9), (−1, 2), (0, 9), (1, 4), (2, 3), (3, −3)}
and let g be the function defined
g = {(−3, −1), (−2, 1), (−1, −9), (0, 2), (1, −3), (2, 8), (3, 2)}.
Find the following value if it exists.
(f ○ g)(3)

Click here to see answer by Edwin McCravy(20055)

Question 1078736: Consider two functions: g(x)=20(1.5)x and the function f(x) shown in the table.

Which statements are true?
Select each correct answer.

f(x) and g(x) are both increasing on the interval (−∞, ∞) .
f(x) increases at a faster rate than g(x) does on the interval (−5, −3) .
g(x) has a greater y-intercept than f(x) does.
f(1) is less than g(−1) .
x f(x)
−5 −45
−4 −48
−3 −49
−2 −48
−1 −45
0 −40
1 −33

Click here to see answer by Boreal(15235)

Question 1078803: The function f(x)=a√(x-h) +k has a maximal domain of [2, ∞) and range of (- ∞,3]. its graph passes through the point (6,-3). Find the equation of this function in the form f(x)=a√(x-h) +k.
√ symbol mean square root.
the answers-3√(x-2) +3.
can you explain to me how to get the answers?
Click here to see answer by MathLover1(20849)

Question 1078905: How can you restrict the domain of f(x)=3x^2 such that it's inverse will be a function.
Click here to see answer by Boreal(15235)

Question 1078905: How can you restrict the domain of f(x)=3x^2 such that it's inverse will be a function.
Click here to see answer by MathLover1(20849)

Question 1079187: If x varies inversely as y and y varies directly as z what is the relationship between x and z
Click here to see answer by Theo(13342)

Question 1079168: Is this a quadratic function in vertex form or conics form? If neither�Please explain what it is. I think It's in conics.
()2 = 4p(), p ≠ 0
Click here to see answer by Fombitz(32388)

Question 1079382: f(x)=x^n+5x, where n is an integer. Find n given the f'(2)=17
Click here to see answer by htmentor(1343)

Question 1079476: let f''(x)= 2x +(1/root(2. x) and f'(x)=2 and f(1) =3 find f(x)
Click here to see answer by solver91311(24713)

Question 1079641: if f(x-1) = x� -4x+8, then f(x+2) is equal to
Click here to see answer by jim_thompson5910(35256)

Question 1079660: F(66)=
F( -25)=
The function f is defined as follow

Click here to see answer by stanbon(75887)

Question 1079601: Find the average value of the function f(t)=100e^(-0.5t) over the interval [0, 4]
Click here to see answer by Fombitz(32388)

Question 1079859: f(x)=3x^2-2x
Click here to see answer by ikleyn(52781)

Question 1080002: In a physics experiment, it is found that the equation V(t) = 1667t � 5940t2
expresses the velocity of an object as a function of time(t). Computer V(0.1), V(0.15), and V(0.2).

I'm not sure if I am doing this right, but this is what I got.
V(t) = 1667(.1) � 5940(.1)^2=107.3
V(t) = 1667(.15) � 5940(.15)^2=116.4
V(t) = 1667(.2) � 5940(.2)^2=95.8
Click here to see answer by Alan3354(69443)

Question 1079904: Graph each function; identify the domain and range; and compare the graph with the graph of y = 1/x.
1. y = 1 / -x - 2. Domain: Range: Compare:

This is a fraction problem. I just need help on the fraction problem. I'll figure out the graph part.

Click here to see answer by rapture(86)

Question 1080073: A landscaper puts 5 fish into a new pond.The number of fish doubles each month over a period of time.Write a function f(x) to determine the number of fish after x months.
Click here to see answer by josgarithmetic(39617)

Question 1080234: If x varies directly as y, and x is 10 when y is 150, find the constant of variation.

Click here to see answer by MathLover1(20849)

Question 1080246: What is the function if the values are:
-3,0
1,-72
4,0
Click here to see answer by Alan3354(69443)

Question 1080318: The function ∫ is defined by
∫(x)=

-6+x
______
7+3x
Find ∫(y+2).
∫(y+2)=???
I thought the answer might be something like...
∫(y+2)=
y-4
______
3y+13
Click here to see answer by rapture(86)

Question 1080335: I was hoping someone could check my work on this function, and help explain why it is, or isn't a viable answer. Thank you.
f(x)=
-6+x
______
7+3x

Find f(y+2).
f(y+2)=???

I thought the answer might be something like...
f(y+2)=
y-4
______
3y+13
Click here to see answer by Edwin McCravy(20055)

Question 1080412: Let a,b,c,d,e,f,g,h be the distinct elements in the set {-7,-5,-3,-2,2,4,6,13}.Find the value of (a+b+c+d)^2+(e+f+g+h)^2.
Click here to see answer by Edwin McCravy(20055)

Question 1080412: Let a,b,c,d,e,f,g,h be the distinct elements in the set {-7,-5,-3,-2,2,4,6,13}.Find the value of (a+b+c+d)^2+(e+f+g+h)^2.
Click here to see answer by MathLover1(20849)

Question 1080496: fractions
a) put them in order from smallest to largest,
b) add them together,
c) subtract the second or second and third from the first.
7/8, 9/32
Click here to see answer by josgarithmetic(39617)

Question 1080578: Describe and correct the error, given the functions f(x)=3x-5.
f(5)=3(5)-5
5f=15-5
5f+10
f=2
Click here to see answer by Fombitz(32388)

Question 1080578: Describe and correct the error, given the functions f(x)=3x-5.
f(5)=3(5)-5
5f=15-5
5f+10
f=2
Click here to see answer by rapture(86)

Question 1080501: a) put them in order from smallest to largest,
b) add them together,
c) subtract the second or second and third from the first.
1. 11/297, 16/432
2. 153/243, 255/405
3. 55/132, 23/143
Click here to see answer by Fombitz(32388)

Question 1080609: f(x) = x2 - 5
For the function shown, what is the range of the function when the domain is {2, 4, 7}?

A) {-1, 44}
B) {-1, -5}
C) {6, 21, 54}
D) {-1, 11, 44}
Click here to see answer by Alan3354(69443)

Question 1080611: https://www.usatestprep.com/modules/gallery/files/23/2384/2384.jpg
Choose the correct formula for the function g.
A) g(x) = 2x + 3 + 2
B) g(x) = 2x + 3 - 2
C) g(x) = 2x - 3 + 2
D) g(x) = 2x - 3 - 2
Click here to see answer by Boreal(15235)

Question 1080623:
f(x) = x^2 - 5
For the function shown, what is the range of the function when the domain is {2, 4, 7}?
A) {-1, 44}
B) {-1, -5}
C) {6, 21, 54}
D) {-1, 11, 44}
Click here to see answer by MathLover1(20849)

Question 1080640: https://www.usatestprep.com/modules/gallery/files/27/2703/2703.gif
Evaluate
A) 34
B) 46
C) 40
D) 7, 10, 13, 16
Click here to see answer by MathLover1(20849)

Question 1080638: https://www.usatestprep.com/modules/gallery/files/191/19149/19149.JPG
Identify the value that is NOT in the range of the piecewise function.
A) -2
B) 1
C) 2
D) 5
Click here to see answer by MathLover1(20849)

Question 1080651: To print posters for school, the school had initially brought a printing machine (purchased for $300), and they estimated that it will cost them an additional $0.15 to print each poster.
a) Write a linear function C(x) to represent the total cost producing x posters. Include start-up costs.
I think an equation would be C(x) = 300+0.15x
b) Write a rational function A(x) to represent the average cost per poster when x posters are produced.
How would you write a rational function for this?
c) What is the domain of A(x) in the context of this question? Assume that they will not purchase the printing machine without producing any posters.
d) State the horizontal asymptote of A(x) and what does it represent in this question.
Click here to see answer by jim_thompson5910(35256)

Question 1080956: The function f(x) is the height of an object x seconds after it is thrown in the air. The object reaches its maximum height in 2 s, and hits the ground at 5 s.
What is the practical domain for the function f(x)?

all real numbers
whole numbers in [0, 5]
[0, 5)
[0, 5]
Click here to see answer by Boreal(15235)

Question 1081090: identify the numerator and denominator in each of the following fractions. identify if it is a proper fraction, an improper fraction, or a mixed number
1. 3/4 =
2. 4/3 =
3. 2 3/4 =
Thank you
Click here to see answer by amfagge92(93)

Question 1081547: (a) A rectangular plot is to be enclosed by fencing wire. Assume that 56 𝑚 of fencing
wire are available.
(i) Show that the area of the plot, in 𝑚^2
, is given by the expression
𝐴 = −𝑥^2 + 28𝑥,
where 𝑥 is the length of the plot.
If someone could explain how I am to work these out that would be great i've been stuck on this for hours and can't find anything
Click here to see answer by Alan3354(69443)

Question 1081529: Kirby moves with constant speed 5 units per hour along the line crossing
the y-axis at midnight and the x-axis later. When is the x-axis crossing made? What does it
mean to say that Kirby�s position is a function of time? What is Kirby�s position 1.5 hours
after midnight? What is Kirby�s position t hours after midnight?
Click here to see answer by Theo(13342)

Question 1082028: Domain of f(x)=sqrt of x divided by x-3
Click here to see answer by Boreal(15235)

Question 1082028: Domain of f(x)=sqrt of x divided by x-3
Click here to see answer by Edwin McCravy(20055)

Question 1082032: g(8b)=5(8b)+7
Click here to see answer by ikleyn(52781)

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