Fill in the blank with the correct inequality symbol, using the rules for producing equivalent inequalities.If -2x > -8, then x 
4.
A. ?
B. <
C. ?
D. >
Answer: B
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Write each expression in factored form as an algebraic expression of a single trigonometric function.
A. sin 2 x + 1 B. - cos x C. sin x + 1 D. sin x - 1
Use a calculator to evaluate the expression. Round your answer to three decimal places
A. 0.864 B. -2.328 C. 1.587 D. 0.700
Find all cube roots of the complex number. Leave answers in trigonometric form.2 + 2i
A. 
cis 20°, 
cis 140°, 
cis 260°
B. 
cis 20°, 
cis 140°, 
cis 260°
C. 
cis 30°, 
cis 150°, 
cis 270°
D. 
cis 20°, 
cis 140°, 
cis 260°
Solve the problem.A summer camp wants to hire counselors and aides to fill its staffing needs at minimum cost. The average monthly salary of a counselor is $2400 and the average monthly salary of an aide is $1100. The camp can accommodate up to 35 staff members and needs at least 20 to run properly. They must have at least 10 aides, and may have up to 3 aides for every 2 counselors. How many counselors and how many aides should the camp hire to minimize cost?
A. 8 counselors and 12 aides B. 13 counselors and 16 aides C. 13 counselors and 17 aides D. 19 counselors and 23 aides