Find the general term of the arithmetic sequence.-3, -9, -15, -21, -27, . . .
A. an = 6n - 3
B. an = 3 - 6n
C. an = -3 - 6n
D. an = -9 - 6n
Answer: B
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Use differentiation to determine whether the integral formula is correct.
dx = 
+ C
A. No B. Yes
Graph.
- 
= 1
A. 
B. 
C. 
D. 
Solve the problem.Six Republicans and six Democrats orally cast their vote in the U.S. Senate. In how many orders can they vote if the first person to vote must be a Democrat?
A. 6 × 11!
B. 6! × 6!
C. 
D. 12!
E. none of these
Solve the problem.A ceramics workshop makes wreaths, trees, and sleighs for sale at Christmas. A wreath takes 3 hours to prepare, 2 hours to paint, and 8 hours to fire. A tree takes 16 hours to prepare, 3 hours to paint, and 4 hours to fire. A sleigh takes 4 hours to prepare, 14 hours to paint, and 7 hours to fire. If the workshop has 115 hours for preparation time, 61 hours for painting, and 106 hours for firing, how many of each can be made?
A. 10 wreaths, 6 trees, 3 sleighs B. 2 wreaths, 9 trees, 5 sleighs C. 9 wreaths, 5 trees, 2 sleighs D. 5 wreaths, 2 trees, 9 sleighs