Solve the Problem $\mathrm { f } ( \mathrm { x } )$

question 164

Multiple Choice

Solve the problem.
-In the following formula, $\mathrm { f } ( \mathrm { x } )$ is the minimum number of hours of studying required to attain a test score of $x : \quad f ( x ) = \frac { 0.41 x } { 100.5 - x }$ . How many hours of study are needed to score 91 ?

• A) \(9.62 \mathrm { hr }\)
• B) \(39.30 \mathrm { hr }\)
• C) \(3.93 \mathrm { hr }\)
• D) \(100.05 \mathrm { hr }\)

---

Definitions:

Refinement

The process of improving something by making small changes, especially to make it more effective or to enhance its quality.

Neatness

The quality of being clean, tidy, and in order; often associated with personal or environmental organization.

Education

The method of obtaining or providing structured learning, particularly in an educational institution like a school or university.

Intelligence

The ability to learn from experience, adapt to new situations, understand and handle abstract concepts, and use knowledge to manipulate one's environment.