SOLUTION: Need help with a problem. If f(x)=(x-3A)/3x+4 and f(3)=6, what is the value of A?

Question 966106: Need help with a problem. If f(x)=(x-3A)/3x+4 and f(3)=6, what is the value of A?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Plug in x = 3 and use this to find A

Replace every x with 3. Since x = 3 when we say f(3)

Replace f(3) with 6. Since f(3) = 6. Now we isolate A

------------------------------------------------------------------------------------------------------------------------

If you need more one-on-one help, email me at jim_thompson5910@hotmail.com. You can ask me a few more questions for free, but afterwards, I would charge you ($2 a problem to have steps shown or $1 a problem for answer only).

Alternatively, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Any amount is greatly appreciated as it helps me a lot. This donation is to support free tutoring. Thank you.

Jim
------------------------------------------------------------------------------------------------------------------------
RELATED QUESTIONS
Need help with a problem. If f(x)=(x-B)/(x-A), f(-3)=0, and f(5) is undefined, what are... (answered by josgarithmetic,ikleyn)

Evaluate when a=2 and b = -3 a. �3a +2b b. b-3b c. �2a(3-b) Solve for x a. x+5= -6 (answered by jim_thompson5910)

I really need some help! Can anyone help me? If f(x)=ln x, g(x)=e^4^x, and h(x)= x^3,... (answered by sheldonbbtrocks)

What is the value of g(x) - f(x) if f(x) = 2x + 4, g(x) = 3x - 2 and x = 12? 3x - 2 -... (answered by Alan3354)

HI. PLEASE HELP ME WITH THIS PROBLEM : IF f(4)=0 and f(6)=6, which of the following could (answered by scott8148)

If f(x) = 4^3+2x-5 and f(2)=3 what is the value of... (answered by Alan3354)

College placement test practice questions with a section on college mathematics. If {{{... (answered by ewatrrr)

evalute f (-3) if f(x)=-x^2+2 f(2) if f(x)=-5x+6 A function f is represented... (answered by stanbon)

I so badly need someones help asap. I have 6 problems i really need help with. Can... (answered by Alan3354)