Use the given vectors to find the indicated expression.v = 4i - 3j + 3k, w = 5i - 4j - 4k, u = -2i - 3j - 3kFind u ? (v × w).
A. 138
B. -102
C. -138
D. -84
Answer: C
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Solve the problem.A 455-seat theater will sell tickets at $20 and $12 for a particular concert. Let x and y represent the number of tickets that will sell for $20 and $12, respectively. Assume that the show will sell out. How many of each ticket must be sold for the revenue to be $6532?
A. 231 tickets at $20 224 tickets at $12 B. 224 tickets at $20 231 tickets at $12 C. 134 tickets at $20 321 tickets at $12 D. 321 tickets at $20 134 tickets at $12
Find the multiplicative inverse of the number.
A. 1
B. -8
C. 8
D. - 
Solve the problem.A new exhibit is scheduled to open at the local museum. Museum officials expect that 8000 people will visit the exhibit in its first week, and that the number of visitors will drop by 40 people per week after the first week during the first 6 months. Find the total number of visitors expected in the exhibit's first 7 weeks.
A. 47,400 visitors B. 55,160 visitors C. 39,400 visitors D. 54,920 visitors
?Find the derivative of 
.
?
A. ?
B. ?
C. ?
D. ?
E. ?