Find the area. Use 3.14 for ?.
A. 530.66 cm2
B. 81.64 cm2
C. 132.665 cm2
D. 40.82 cm2
Answer: C
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Add or subtract. Assume all variables represent positive real numbers.
- 
A. 4
- 3
B. 7
C. 3 - 4
D. 3
- 4
Solve the problem.The sales of a new product (in items per month) can be approximated by 
, where t represents the number of months after the item first becomes available. Find the number of items sold per month 3 months after the item first becomes available.
A. 2325 items per month B. 4325 items per month C. 525 items per month D. 725 items per month
Simplify the complex fraction using Method 1.
A. 
B. 
C. 
D. 
Find all the complex roots. Leave your answers in polar form with the argument in degrees.The complex cube roots of -8i
A. 2(cos 90° + i sin 90°), 2(cos 210° + i sin 210°), 2(cos 330° + i sin 330°) B. 512(cos 90° + i sin 90°), 512(cos 210° + i sin 210°), 512(cos 330° + i sin 330°) C. 8(cos 90° + i sin 90°), 8(cos 210° + i sin 210°), 8(cos 330° + i sin 330°) D. 2(cos 180° + i sin 180°), 2(cos 300° + i sin 300°), 2(cos 60° + i sin 60°)