Find the indicated vector.Let u = 
. Find -2u.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Perform the indicated operation(s). Where possible, reduce the answer to lowest terms.
A. 10 B. 8 C. 6 D. 9
Mathematics
Solve. If necessary, round percents to the nearest tenth, dollar amounts to the nearest cent, and all other numbers to the nearest whole.Due to a lack of funding, the number of students enrolled at City College went from 6000 last year to 5000 this year. Find the percent decrease in enrollment.
A. 120% B. 83.3% C. 20% D. 16.7%
Mathematics
Evaluate.
+ 
+ . . . + 
A. 254 B. 128 C. 255 D. 256
Mathematics
Add. Do not use a number line except as a check.-2.2 + (-6) + (-5.9) + 11
A. 8.9 B. -13.1 C. -3.1 D. 8.7
Mathematics