Simplify.
? 
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.A furniture manufacturer decides to make a new line of desks. The table shows the profit, in thousands of dollars, for various levels of production.
Find a quadratic function to model the data, and use the model to predict the profit if 450 chairs are made.
A. Just under $45,000 B. Almost $44,000 C. Almost $42,000 D. Just over $40,000
Simplify the expression. Assume that all variables are positive when they appear.
A. -5x30 B. -5x33 C. -5x11 D. 5x11
Use the percent proportion to answer the question. Round your answer to the nearest tenth of a percent, if necessary.983 shelves is what percent of 780 shelves?
A. 1.3% B. 0.1% C. 126.0% D. 79.3%
Write the complex number in trigonometric form r(cos ? + i sin ?), with ? in the interval [0°, 360°).-
- i
A. 
(cos 315° + i sin 315°)
B. 
(cos 225° + i sin 225°)
C. 
(cos 135° + i sin 135°)
D. 
(cos 45° + i sin 45°)