Solve.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 782. 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 51-hour review course. Round to the nearest tenth.
A. 697.8
B. 719.1
C. 709.3
D. 705.1
Answer: D
Mathematics
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Determine the equation of the given line, as well as the slope of the line. If the slope is undefined, state this.
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Mathematics