Which of the following statements have the same result? Explain each step in solving each one.

f(1) when f(x) = 5x + 1
f−1(3) when f(x) = 2x+3
3y − 7 = y + 5

Question

Which of the following statements have the same result? Explain each step in solving each one.

f(1) when f(x) = 5x + 1
f−1(3) when f(x) = 2x+3
3y − 7 = y + 5

anonymous · Answer

@Kim21 @jim_thompson5910

anonymous · Answer

so you have 1/ f(2) = 8 let it there
now,              2/ f−1(3) when f(x)=2x−73 
you have to find f−1(x) which is 3x+72  and then f−1(3)=8
So, 1/ = 2 
      2/ = 8 
now, 3/ solve for y :   2y+14 = 4y -2 
                                              16 = 2y 
                                               y = 8 
 Summary :  1/ = 2
                       2/ = 8 
                       3/ =8 
 conclusion: 2/ and 3/ have the same solution.
Read it carefully, hopefully you can follow and know how to work on this kind of problem from now on. Good luck

anonymous · Answer

oh, mistake, f(2 ) =8 , they are all equal. I am sorry.

anonymous · Answer

Lol how did you do that so fast?

anonymous · Answer

i answerd the same question a few days ago :D copy paste lol

anonymous · Answer

so f(x)5x+1=?

anonymous · Answer

yayysss<3 Thanks so much!

anonymous · Answer

welcome :)