Find z1z2. Write the answer in polar form with the argument between 0° and 360°.z1 = 2 + 2i, z2 = 
- i
A. 4
(cos 15° + i sin 15°)
B. 4(cos 15° + i sin 15°)
C. 4(cos 345° + i sin 345°)
D. 4
(cos 345° + i sin 345°)
Answer: A
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Estimate error made by using the partial sum S4 as an approximation to the sum S of the entire series.
, -1 < t ? 1
A. 
B. 
C. 
D. 0.20
Solve the problem.Sales of cassette tapes at a local music store decreased approximately linearly from 1,400,000 cassettes in 1988 to 11,000 cassettes in 1993. Find the rate of change of sales per year.
A. 277,800 cassettes per year B. -2580 cassettes per year C. -277,800 cassettes per year D. -27,780 cassettes per year
These triangles are similar. Find the missing length.
A. x = 28 B. x = 36 C. x = 34 D. x = 45
Complete the table. ObjectYards(yd)Centimeters(cm) Inches(in.)Meters(m)Millimeters(mm)Length of a book 30.8????
A.
| Object | Yards (yd) | Centimeters (cm) | Inches (in.) | Meters (m) | Millimeters (mm) |
| Length of a book | 3.4? | 30.8? | 121.2596? | 3080? | 3.08? |
B.
| Object | Yards (yd) | Centimeters (cm) | Inches (in.) | Meters (m) | Millimeters (mm) |
| Length of a book | 0.3368? | 30.8? | 12.1260? | 0.308? | 308? |
C.
| Object | Yards (yd) | Centimeters (cm) | Inches (in.) | Meters (m) | Millimeters (mm) |
| Length of a book | 0.3368? | 30.8? | 12.1260? | 0.308? | 3080? |
D.
| Object | Yards (yd) | Centimeters (cm) | Inches (in.) | Meters (m) | Millimeters (mm) |
| Length of a book | 3.4? | 30.8? | 12.1260? | 3.08? | 308? |