Simplify the expression.
A. - sin x cos2x
B. - cos x sin2x
C. cos x sin2x
D. sin x cos2x
Answer: B
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Solve.Annica owes $734.48 on her charge card. She returns for credit items costing $23.44 and $36.43. She makes a purchase for $26.51 and additional purchases of $40.26, $197.02, and $127.82. She then makes a payment of $747.45. Find the amount she now owes.
A. $1030.45 B. $438.51 C. $318.77 D. $1150.19
Solve the problem.In June, Carla charged the following expenses to her credit card: winter coat 
jeans 
and shoes 
On July 1, she makes a payment of $200 and makes no other purchases with this credit card. The bank that issues the card charges 1.2% interest per month. What is the balance due on August 1?
A. $234.01 B. $451.35 C. $266.38 D. $248.95
Solve the problem.How many 4-letter codes can be formed using the letters A, B, C, D, E, and F? No letter can be used more than once.
A. 15 B. 360 C. 60 D. 30
Solve the problem.Find the volume of the rectangular solid with the following dimensions.Length = 9 inches, width = 7 inches, height = 6 inches
A. 63 B. 69 C. 378 D. 42