Solve the Problem $y$ Is the Minimum Number of Hours of Studying Required to Indicated

Multiple Choice

Solve the problem. Round to two decimal places unless otherwise indicated.
-In the following formula, $y$ is the minimum number of hours of studying required to attain a test score of $x$ : $y =$ $\frac { 0.47 x } { 100.5 - x }$ . How many hours of study are needed to score $97 ?$

A) 13.03 hr
B) 27.85 hr
C) 100.02 hr
D) 130.30 hr