Solve the problem.In a school survey, students showed these preferences for instructional materials. Answer the question. 
About how many students would you expect to prefer written materials in a school of 900 students?
A. About 162 students
B. About 9 students
C. About 81 students
D. About 324 students
Answer: C
Mathematics
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Evaluate or simplify the given expression.cot(csc-1 2x)
A. 
B. 
C. 
D. 4x2 - 1
Mathematics
Evaluate the definite integral.
A. -10
B. 10
C. 20
D. 10(e3 - e)
Mathematics
Rewrite each sum using the commutative property of addition.10 + 
=
A. 24 + 
B. 
+ 
C. 24 + 10
D. 
+ 10
Mathematics
Write the number in standard form.8(cos 135° + i sin 135°)
A. 4
- 4i
B. -4
+ 4i
C. 8
+ 4i
D. 8
- 4i
Mathematics