Use reference angles to find the exact value of the expression. Do not use a calculator.sec 
A. 0
B. 1
C. -1
D. undefined
Answer: D
Mathematics
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Convert the numeral to Hindu-Arabic form.
A. 20 B. 20,000 C. 200 D. 2000
Mathematics
Simplify the expression. Assume that all variables represent positive real numbers.
? 
A. x40/3 B. x120 C. x3/3 D. x13/3
Mathematics
Solve the equation.
= 
- 
A. 
B. 
C. 
D. 
Mathematics
Write a system of linear inequalities that has the given graph.
A. 
B. 
C. 
D. 
Mathematics