Solve. Assume the exercise describes a linear relationship.Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a 70-hour review course average a score of 783. Find a linear equation which fits this data, and which relates score to review time. Use this equation to predict an average score for persons taking a 48-hour review course. Round your answer to the nearest tenth.
A. 686.1
B. 697.6
C. 707.4
D. 693.4
Answer: D
Mathematics
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