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 44-hour review course. Round your answer to the nearest tenth.
A. 669.8
B. 677.1
C. 681.3
D. 691.1
Answer: B
Mathematics
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A. 
B. 
C. 
D. 
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Graph the list of integers on the number line.-10, -8, -6, -4 
A. 
B. 
C. 
D. 
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Solve the problem.Shari enjoyed services at a spa. The total cost of these services was $310. If she decides to leave a 9% tip, how much should the tip be? Round your answer to the nearest cent.
A. $24.80 B. $27.90 C. $279.00 D. $31.00
Mathematics