Evaluate the expression for the given replacement values.
for y = -5 and z = 6
A. 5
B. 6
C. 0
D. - 5
Answer: C
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For an election with four candidates (A, B, C, and D) we have the following preference schedule:
How many first-place votes are needed for a majority in this election?
A. 43 B. 15 C. 20 D. 22 E. none of these
Choose the most reasonable unit of measure.An apple: 213 
(mg, g, or kg)
A. kg B. mg C. g
Online retail sales stood at $23.5 billion for 2000. For the next 2 years, they grew by 32.8% and 27.7% per year, respectively. For the next 6 years, online retail sales are projected to grow at 30.5%, 19.3%, 24.4%, 13.8%, 17.8%, and 10.3% per year, respectively. What are the projected online sales for 2008? Round your answer to the nearest tenth. ? $__________ billion
Fill in the blank(s) with the appropriate word(s).
The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, ?).x = -3
A. r sin ? = 3 B. r cos ? = -3 C. r cos ? = 3 D. r sin ? = -3