Find the requested sum for the arithmetic sequence.a1 = -13, d = -2; S6
A. -78
B. -108
C. -25
D. -23
Answer: B
Mathematics
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Find the second derivative of the function.s = 
A. 
= 5t4 - 
- 
B. 
= 20t3 + 
+ 
C. 
= 20t5 + 
+ 
D. 
= 5t3 - 
- 
Mathematics
Provide an appropriate response. Find the slope of the line that passes through the points (-5, 3) and (-5, 1).
A. - 
B. 0
C. -5
D. no slope
Mathematics
Solve the problem.A theater has 20 rows with 23 seats in the first row, 27 in the second row, 31 in the third row, and so forth. How many seats are in the theater?
A. 2,520 seats B. 1,220 seats C. 1,260 seats D. 2,440 seats
Mathematics
Solve the problem.The sum of a student's three scores is 234. If the first is 12 points more than the second, and the sum of the first two is 18 more than twice the third, what was the first score?
A. 72 B. 87 C. 60 D. 75
Mathematics