Question

Medal to most helpful. Short 2 part question. 1. Which of the following statements have the same result? 2. Explain each step in solving each one.

Answer 1

I. f(2) when f(x) = 3x + 2
II. \[f^{-1}(3) when f(x)=\frac{ 2x-7 }{ 3 }\]
III. 2y + 14 = 4y − 2

Answer 2

Work for I:
f(x) = 3x + 2
f(2) = 3(2) + 2
= 6 + 2
= 8

Work for III:
2y + 14 = 4y − 2
-2y - 2y
14 = 2y - 2
+ 2 + 2
16 = 2y
y = 8

So, I and III both equal 8. My problem is that I don't know how to figure out II. Help!?

Answer 3

Will you help me out, please? @Hero @Abhisar @nincompoop @jim_thompson5910 @mathmale @SolomonZelman @undeadknight26

Answer 4

maybe this will help http://openstudy.com/study#/updates/54667d7ae4b05b0e1f1d40b3

Answer 5

Thanks.