Questions on Algebra: Inverse operations for addition and multiplication, reciprocals answered by real tutors!

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Question 37903: Determine whether g(x)=3x-6 and f(x)=1/3x+2 are inverse functions.
Thank you

Click here to see answer by AnlytcPhil(1806) About Me 

Question 37904: Determine whether g(x)=3x-6 and f(x)=1/3x+2 are inverse functions.
Thank you

Click here to see answer by fractalier(6550) About Me 

Question 38199: A home was purchased for $120,000 in 2001. After one year the home had appreciated 5%. After one more year, the home had appreciated an additional 4%. What was the value of the home after these two years, rounded to the nearest hundred dollars?
A) $124,800 B) $126,000 C) $130,800 D) $131,000
. A new car is marked down from $28,000 to $25,200. What is the discount rate?
A) 9% B) 11% C) 10% D) 15%

Click here to see answer by josmiceli(19441) About Me 

Question 38156: A home was purchased for $120,000 in 2001. After one year the home had appreciated 5%. After one more year, the home had appreciated an additional 4%. What was the value of the home after these two years, rounded to the nearest hundred dollars?
A) $124,800 B) $126,000 C) $130,800 D) $131,000
. A new car is marked down from $28,000 to $25,200. What is the discount rate?
A) 9% B) 11% C) 10% D) 15%

Click here to see answer by fractalier(6550) About Me 

Question 39175: inverse of g(x)=3^x+1
i get to the point of were i have the equation
x-1=3^y but i dont know how to get the y isolated on one side

Click here to see answer by Nate(3500) About Me 

Question 40473: I am attemping to solve this rational expression problem.
The problem consist of adding and simplifying .
6w/w^2-64 + w/w-8
i think the answer is w^2+8 / (w-4)(w+4)
However I am unsure ..
If I performed this problem incorrectly
Please show me the correct format.

Click here to see answer by Nate(3500) About Me 

Question 40476: I tried finding a solver on the site to find the reciprocal for this question.
y^2+5y-9 / y^2-9y+3
This is a bit tricky.
I simply dont understand it.

Click here to see answer by Nate(3500) About Me 

Question 40479: I tried finding a solver on the site to find the reciprocal for this question.
y^2+5y-9 / y^2-9y+3
This is a bit tricky.
I simply dont understand it.

Click here to see answer by stanbon(75887) About Me 

Question 40475: I have another problem that I seem to have a bit of trouble understanding...
y^2-81/y^2 * y^2-9y/y^2+y+90
This problem has to be solved as a ration expression.
However I think the answer would be y+2/y-2.
For some reason I dont think that is rite.

Click here to see answer by stanbon(75887) About Me 

Question 41174: I need like a lesson on inverse operations for a questions like -2+8n=40
Click here to see answer by zeynep(43) About Me 

Question 41252: (5x -3xy) / (7xy+3x^2)
Click here to see answer by Nate(3500) About Me 

Question 41266: I need some help.

Subtract
9 lb 15 oz
- 5 lb 8 oz
Thanks,
Lyn

Click here to see answer by Nate(3500) About Me 

Question 32732: y=2x-1
x=2y-1
x+1=2y
x+1/2=y

Click here to see answer by corrie21(4) About Me 

Question 7636: Please help me with this. I've read the example problem of how its done but I still dont get it.
Find the additive inverse of 4/7

Click here to see answer by chickengirl(1) About Me 

Question 44642: I'm returning back to school after 25yrs, need help with algerbra, really bad.
my problem is from textbook "Prealgerbra" by Aufmann,Baker and Lockwood, chapter 7.5, question # 14.
PROBLEM:
The distance (d) a spring will stretch varies directly as the force (f) applied to the spring. If a force of 12lb is required to stretch a spring 3inchs, what force is required to stretch the spring 5 inches?
this probable seem simple to you, but I can't grasp the concept. Could you list the steps needed to solve the above problem

Click here to see answer by stanbon(75887) About Me 

Question 46005: Find the inverse of : f(x) = 2/x+1
Click here to see answer by Nate(3500) About Me 

Question 46823: Can someone help me find the inverse of the following functions?? please???
f(x)=x+3
f(x)=x/(x+2)
f(x)=square root of x
f(x)=3^x....this one is 3 to the "x" power
please help me thank you!

Click here to see answer by stanbon(75887) About Me 

Question 47086: Algebraically find the equation of the inverse function for: h(x) = 1-x^3
Click here to see answer by atif.muhammad(135) About Me 

Question 47679: What is -x over 4 =18 2. What is -2 over 3x = -1 over six
3. What is 14y =23y-17-10 4. What is 0.22y-0.6=0.12y+3-0.8y Please help!

Click here to see answer by checkley71(8403) About Me 

Question 48808: you are fencing a rectangular corral to keep horses. The Region's length is 48 more feet than it s width. THe perimeter of the region is 184feet. what are the dimensions of the region?
Write a verbal model that relates the length, the width, and the perimeter.

Click here to see answer by checkley71(8403) About Me 

Question 49449: Can someone help me on this problem?
I need to solve for x and check my result:
-3x = 27
Thanks,
Sher

Click here to see answer by prabhjyot(165) About Me 

Question 49454: Can someone help me solve this problem?
I need to solve for x and check my result:
-4(2x-3) = -8x + 5
Thanks,
Lyn

Click here to see answer by checkley71(8403) About Me 

Question 49451: Can someone help me on this problem?
I need to solve for x and check results:
9x + 7 = 5x -3
Thanks,
Sher

Click here to see answer by checkley71(8403) About Me 

Question 49448: Can someone help me on this problem?
I need to solve for x and check my result:
3/7x = 15
Thanks,
Sher

Click here to see answer by checkley71(8403) About Me 

Question 50370: What is the inverse function of f(x)=x+1?
Click here to see answer by stanbon(75887) About Me 

Question 50705: solve for y:
(4/5)*x-10*y=-3


Thanks!!
Matt

Click here to see answer by stanbon(75887) About Me 

Question 50993: I really couldn't find a catagory for my pre- Algebra problem sorry.
Well here is my problem x-21=-2. Thank you for your time:)
x=-2+21
x=19

Click here to see answer by Juhi(44) About Me 
Question 50993: I really couldn't find a catagory for my pre- Algebra problem sorry.
Well here is my problem x-21=-2. Thank you for your time:)
x=-2+21
x=19

Click here to see answer by Niku(6) About Me 

Question 52061: inverse of y=4(x-2)+9
I can do easy questions but not this please help and quickly ,thanking you in advance please do quickly as in for early tomorrow mourning many thanks

Click here to see answer by Edwin McCravy(20054) About Me 

Question 52059: I need help with finding the inverse of:
f(x)-2x+7

Click here to see answer by tutorcecilia(2152) About Me 

Question 52378: hey sher, when u have digits inside the absolute value symbols, u take the distance those numbers are from zero....4 is 4 away & -3 is 3 away from 0. it's always gonna be postive. so u just add 4 & 3 and get 7 :D
| 4 | + |-3|
Thank you,
Sher

Click here to see answer by funmath(2933) About Me 
Question 52378: hey sher, when u have digits inside the absolute value symbols, u take the distance those numbers are from zero....4 is 4 away & -3 is 3 away from 0. it's always gonna be postive. so u just add 4 & 3 and get 7 :D
| 4 | + |-3|
Thank you,
Sher

Click here to see answer by Niku(6) About Me 

Question 52918: How would u get -6+2x=9-3x ???
***ANY HELP WOULD BE GREATLY APPRECiATED***

Click here to see answer by smartness(7) About Me 

Question 52912: {{-7pq(2q+8p)}}
Click here to see answer by funmath(2933) About Me 

Question 53168: 1/5 x 10= b
Click here to see answer by checkley71(8403) About Me 

Question 53164: a/13=2
Click here to see answer by checkley71(8403) About Me 

Question 53405: what is the inverse function of
*e= refers to the number
y= 1+ e^x / 1- e^x

Click here to see answer by venugopalramana(3286) About Me 

Question 54199: I do not know how to solve this problem

f(x)= 11x-9 g(x)= x+11 over 9


verify the inverse functions

Click here to see answer by Earlsdon(6294) About Me 

Question 54450: what is the easierest way to study math or pre algebra?

Click here to see answer by funmath(2933) About Me 

Question 54770: why is algebra so hard
Click here to see answer by checkley71(8403) About Me 

Question 16967: 3(12)+(-42)
__________
(-1)^3+7

Click here to see answer by ayan(1) About Me 

Question 55499: Desribe how multiplication and division are inverse operations? Give an example?
Click here to see answer by stanbon(75887) About Me 

Question 55555: x+152=28
Click here to see answer by tutorcecilia(2152) About Me 

Question 55570: 760=8n
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Question 55580: 5x=40
Click here to see answer by Genius(17) About Me