Solve the equation.
x = 2401
A. {4}
B. {-4}
C. 
D. 
Answer: B
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Answer the question.A teacher gives the same math exam to two different classes. The second class has more students than the first. The mean score for the first class is 50% and the mean score for the second class is 70%. What can you say about the mean score for both classes combined?
A. It is equal to 60%. B. It is higher than 60%. C. It is lower than 60%. D. It may be higher or lower than 60%, this cannot be determined from the information given.
Find the midpoint of the line segment joining the two points.(0, -9) and (9, 0)
A. 
B. 
C. (9, -9)
D. (-9, -9)
Change the polar coordinates (r, ?) to rectangular coordinates (x, y).(8, 0°)
A. (8, 0) B. (-8, 0) C. (0, 8) D. (0, -8)
Solve each problem.The population growth of an animal species is described by 
where t is measured in months. Find the population of this species in an area 6 months after the species is introduced.
A. 240 B. 704 C. 470 D. 74