Use a double-angle identity to find the exact value of the expression.1 - 2 sin2 
A. - 
B. 
C. 
D. - 
Answer: B
Mathematics
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Add or subtract as indicated. Write your answer in the form a + bi.(-4 + 7i) - 3
A. 7 - 7i B. -7 + 7i C. -1 - 7i D. -1 + 7i
Mathematics
Solve the problem.John owns a hot dog stand. His profit, in dollars, is given by the function 
where x is the number of hot dogs sold. What is the most he can earn?
A. $99 B. $49 C. $120 D. $106
Mathematics
Divide. Simplify, if necessary.
÷ 
A. 1
B. 
C. - 9
D. - 
Mathematics
The _____current asset investment policycalls for relatively large amounts of current assets to be carried by a company.
A. relaxed B. restricted C. moderate D. lean-and-mean E. speculative
Mathematics