Revised SAT Math: Linear equations and rearrangements

 
Try the following SAT math question for the Revised SAT that deals with linear equations and rearrangement of expressions:
$$R = \dfrac{7}{24}(F-32) + \dfrac{15}{2}$$
The formula above gives the conversion of temperature measured in Fahrenheit, $F$, to degrees Roemer, $R$. Which of the following equations could be used to convert temperatures from degrees Roemer to Fahrenheit?

1. $\quad F = \dfrac{24R-11}{7}$
2. $\quad F = \dfrac{4(6R+11)}{7}$
3. $\quad F = \dfrac{24R}{7}-11$
4. $\quad F = 3R+ \dfrac{19}{2}$