Solve the problem.The population of a town was 24,300 at the beginning of 1970. If the population decreased by 250 people per year, how many people lived in the town at the beginning of 1985?
A. 20,800
B. 20,300
C. 3750
D. 20,550
Answer: D
Mathematics
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Answer the question.What is a quadrilateral with diagonals that bisect each other?
Fill in the blank(s) with the appropriate word(s).
Mathematics
Perform the indicated operation. Simplify the result.
+ 1
A. 
B. 
C. 
D. 
Mathematics
Solve using Cramer's rule, if possible. If it is not possible, state whether the system is inconsistent or has infinitely many solutions.
A. (-1, 7) B. (1, 7) C. (-7, -1) D. (7, 1)
Mathematics
Solve the system of equations by substitution.
A. (7, 0) B. (0, -7) C. (1, -8) D. no solution
Mathematics