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anonymous · Answer

Juliana has created the function
$$f(x)=\frac{ 3x+2 }{ 4 }$$ to represent the cost of texting on her current plan, where x represents the number of texts. Juliana discovers that using the inverse function to solve for x = 24, she can predict how many texts she can use for $24. Explain to Juliana how to accomplish this, using complete sentences.

anonymous · Answer

$$24=\frac{ 3x+2 }{ 4 } solve~x$$

mertsj · Answer

1.  Multiply both sides by 4.
2.  Subtract 2 from both sides.
3.  Divide both sides by 3.

anonymous · Answer

I'm awfully confused... 
Can you go through the problem step by step? How do I find the inverse of the original equation?

jdoe0001 · Answer

$\bf f(x)=\color{blue}{y}=\cfrac{3\color{red}{x}+2}{4}\qquad inverse \implies \color{red}{x}=\cfrac{3\color{blue}{y}+2}{4}$

and solve it for "y"