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

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Question 153210: Is Y a function of d? Is d a function of y?
y 1993 94 95 96 97 98
d $2 $4 $3 $-2 $5 $2
Click here to see answer by stanbon(75887)

Question 153214: find a function formula that takes the x values and produces the y values
x y
0 -2
1 1
2 4
3 7
4 10
I will send a check for your help can you give me a mailing address
Click here to see answer by jim_thompson5910(35256)

Question 153800: how do i do distributive property on a fraction such as:2 thirds(9b-27)?this is from lesson1-7

Click here to see answer by checkley77(12844)

Question 153876: Hi, i'm doing a worksheet from algebra 1 about problem solving using equations, but there is for questions asking pretty much the same thing that I do not get. The first one says," The sum of three consecutive integers is 279. Find the integers." I got this for the equation. x+y+z=279, but I have no clue if it's right, and if it is how to solve it.
Click here to see answer by jim_thompson5910(35256)

Question 154133: What is the Domain of the function y = (x 2 � 2) /( x � 2).
Also, find f(x + 1).

Click here to see answer by stanbon(75887)

Question 154177: please help with homework
1) is the relation xy=5 a function within the domain(-5,-1)
2)f(x)=4x^2-2x-6 and g(x)=2x-3 find the domain of (f-g)(x) and (f/g)(x)
3)find two numbers Y such that the distance from (-3,2)to (5,Y)is 10
4)Parallel to the line 2x-3y+4=0 passing through the origin
5)slope passing through the points (5,4)
6)A line passing through the points (7,-3)and(1,3).find standard form of the line and the linear function define by f(x)=mx+b that has the line as its graph.
Click here to see answer by stanbon(75887)

Question 154223: For the function y = 3x^2 + 12x + 9 find:
A. Whether the curve is concave up or down
B. The y-intercept
C. The x-intercept
D. The Vertex
E. The Maximum or Minimum value.

Click here to see answer by jim_thompson5910(35256)

Question 154221: For the function y = 3x^2 + 12x + 9 find:
A. Whether the curve is concave up or down
B. The y-intercept
C. The x-intercept
D. The Vertex
E. The Maximum or Minimum value.

Click here to see answer by jim_thompson5910(35256)

Question 154214: Given the function f(x) = x^2 - x find the AVERAGE RATE of CHANGE of f from 3 to 5
Click here to see answer by jim_thompson5910(35256)

Question 154389: Write an equation for the line.
Containing x-intercept of 5 and y-intercept of -2.
Click here to see answer by ankor@dixie-net.com(22740)

Question 154447: For a 2-day rental, a rental car agency charges a $40 fee per day plus $0.35 per mile.
The equation represents this model, where C symbolizes the total cost of
the rental, and x stands for the number of miles driven

Click here to see answer by nerdybill(7384)

Question 154548: 19+(x/2)=4
if you can i nedd help help in
-1/5d-1=12

Click here to see answer by Alan3354(69443)

Question 154559: The problem is
Jo is thinking of a number. Four less than 9 times the number is 176. Find Jo's number.
Click here to see answer by checkley77(12844)

Question 154558: The problem is -(1/5)d-1=12
Click here to see answer by checkley77(12844)

Question 154595: h(x)=-2x+11 Evaluate the function when x=-3,0 and 2.
Click here to see answer by oscargut(2103)

Question 154594: find the domain of the square root of 4-x^2/ x-3
Click here to see answer by edjones(8007)

Question 154608: Write a rule for the function when X = 2,3,4,5,6 and Y = -2,-5,-8,-11,-14?
Click here to see answer by orca(409)

Question 154697: For each function, find f(-2), f(-1/2), and f(7)
f(x)=5x+2
Click here to see answer by oscargut(2103)

Question 154722: The problem is
1.2x-3.5=x+1.7
the other is
6-7(m-3)+1=0
Click here to see answer by checkley77(12844)

Question 154762: What are the coordinates of the apex of:
(f*g)(x) if f(x)=x^2+4 and g(x)=x-3
Click here to see answer by jim_thompson5910(35256)

Question 154968: how do i find the domain of f(x)= x^3 + 5x / x^2 - 4x
Click here to see answer by stanbon(75887)

Question 154986: Write a function for the rule represented by the graph. Identify the domain and tge range of the function.When the functions are (1,0),(2,2)(3,4)(4,6)? I get the graph part but I'm suppose to solve like y=x? I don't understand how to solve this.
Click here to see answer by stanbon(75887)

Question 154957: the product of 15 and c?
Click here to see answer by edjones(8007)

Question 155117: Thank you in advance for helping me with this function problem. I am trying the difference quotient. The problem is find f(a+h)-f(a)/h
f(x)=2x^2+7x-4
this is what I have done.
f(a)=2a^2+7a-4
f(a+h)=2(a+h)^2+7(a+h)-4
2(a^2=2ha+h^2+7a+h-4
f(a+h)-f(a)=(2a^2+4ha+2h^2+7a+7h-4)-(2a^2+7a-4)
in the end this is what I got 4a+2h=7 Good???

Click here to see answer by oscargut(2103)

Question 155105: !!!!Thank you in advance for your help with this problem. If f(x)={2 for x<0, x^2+1 for 0<=x<=4, -1 for x>4
find f(3), f(6),f(0) and f(-3)
The answers I got were...
f(-3)=2
f(0)=0^2+1=1
f(3)= 3^2+1=10
f(6)=-1
thank you for checking these for me. I want to make sure I am doing there correctly.

Click here to see answer by oscargut(2103)

Question 155212: WHY DOES -3-20=-23
Click here to see answer by edjones(8007)

Question 155277: What is the domain of 1/((4(x^3))-5x)?
Click here to see answer by checkley77(12844)

Question 155305: What is the range of the function y=-x+2 with domain {3,6,8,9}?
Click here to see answer by stanbon(75887)

Question 155389: 3/5 y=4/10

1/5 k - 4/7= 1/7
Click here to see answer by checkley77(12844)

Question 155407: Hello...um i need to find the Value Of X and Y
4x=-5y+40
x=-y+9
i know itz pretty easy but i kinda forget everything during the summer...can u plz help me..it will b greatly appreciated =]
Click here to see answer by checkley77(12844)

Question 155487: find f of g when f(x)= x^2-3x and g(x)=2x
Click here to see answer by stanbon(75887)

Question 155486: A man has an outdoor patio connected to his coffee shop. His plans call for a 42 inch high brick wall that will surround three sides of the patio with the coffee shop as the fourth wall. He found someone to sell him molding but there is obly enough for 80 feet. he wants atleast 10 outdoor patio tables which each take up 64 square foot. He needs to consider the floor area of the patio.
What would be the equation for this word problem?
Click here to see answer by checkley77(12844)

Question 155654: I am having touble with this F of G and G of F.
A) Determine the domain and range of a) F(x)= 2/(x^2+1) and b) g(x)=Square root of x-3
B) Find the formula for f(g(x)) and the domain of f(g(x))
C) Find the formula for g(f(x)) and the domain of g(f(x)).
Thankyou so much...
Click here to see answer by jim_thompson5910(35256)

Question 156117: Find k as a function of j.
j=5/k+1 +2
Click here to see answer by Fombitz(32388)

Question 156135: A retangle has a base that equals three times its height. Find an expression for the retangle's perimeter(P) as a function of its base(b).
Click here to see answer by kdr(11)

Question 156145: thank you in advance for helping me with this problem!!!
f(x)=x^2+x
I factored out the x to get: x(x+1)and then got x can not equal 0 or -1 for the domain. Am I on the right track? Thank you.
Click here to see answer by jim_thompson5910(35256)

Question 156168: I have one more problem that hopefully you'll be able to help me;
If f(4)=0 and f(6) =6, which of the following could represent f(x)?
A. 2/3x-4
B. x+2
C. x-4
D. 3/2x+6
E. 3x-12
Click here to see answer by jim_thompson5910(35256)

Question 156196: find domain and range for y= x^2+3
Click here to see answer by Edwin McCravy(20054)

Question 156204: A study on numerous streams examined the effects of a warming climate. It found an increase in water temperature of about .7 degrees celcius for every increase 1 degree celcius in air temperature.
If the air temperature increased by 9 degrees celcius by how much would you expect the stream temperature to increase?

Click here to see answer by checkley77(12844)

Question 156202: let (f) represent the number of feet. which algebraic expression represents the number of inches in (f)
Click here to see answer by checkley77(12844)

Question 156283: I have no idea how to answer this problem let alone solve it id appreciate it if you could help me soon because it is begging to get late in the day.
Click here to see answer by Fombitz(32388)

Question 155414: Directions: Make a table for the function. Identify the range of the function.
18.
y=2/3x + 1/3
Domain: 4,6,8,12

Click here to see answer by Fombitz(32388)

Question 156442: Graph each relation. Find the domain and range.
{(-1,1),(-2,2),(-3,3),(-4,4)}
Click here to see answer by jim_thompson5910(35256)

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