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

question 76

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 $x$ : $y =$ $\frac { 0.50 x } { 100.5 - x }$ . How many hours of study are needed to score $86 ?$

• A) 5.58 hr
• B) 29.70 hr
• C) 2.97 hr
• D) 100.91 hr

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Definitions:

Expected Value

The anticipated value of a random variable, calculating the mean of all possible values weighted by their probabilities.

Soccer Team

A group of players formed to compete in soccer matches, typically consisting of eleven players.

Random Variable X

A variable whose possible values depend on the outcomes of a probabilistic phenomenon.

Expected Profit

The forecasted amount of profit, calculated as the sum of all possible profits each multiplied by their probabilities of occurrence.