Solve the problem.A survey of the 9424 vehicles on the campus of State University yielded the following circle graph. 
What percent of the vehicles are hatchbacks?
A. 311%
B. 28%
C. 9%
D. 33%
Answer: D
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Solve the problem.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 749. Find a linear equation which expresses score, S, in terms of time, t. Use this equation to predict an average score for persons taking a 41-hour review course. Round your answer to the tenths place.
A. 669.5 B. 655.5 C. 659.7 D. 648.2
Solve the equations containing absolute value. 
= -5
A. 
B. 
C. 
D. ?
Use the given graph of f(x) = ax2 + bx + c to solve the specified inequality.f(x) ? 0
A. x ? 2 or x ? 6 B. 2 ? x ? 6 C. x ? 6 D. No solutions
Solve the problem.A chemist needs 50 milliliters of a 53% solution but has only 49% and 59% solutions available. How many milliliters of each should be mixed to get the desired solution?
A. 40 mL of 49%; 10 mL of 59% B. 20 mL of 49%; 30 mL of 59% C. 30 mL of 49%; 20 mL of 59% D. 10 mL of 49%; 40 mL of 59%