Use the formula for the sum of the first n terms of an arithmetic sequence.Find the sum of the first 40 terms of the arithmetic sequence: -9, -13, -17, -21, . . .
A. -3473
B. -3560
C. -3480
D. -169
Answer: C
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Solve the problem.Ron and Kathy are ticket-sellers at their class play. Ron is selling student tickets for $1.00 each, and Kathy selling adult tickets for $5.50 each. If their total income for 16 tickets was $47.50, how many tickets did Ron sell?
A. 9 tickets B. 11 tickets C. 12 tickets D. 7 tickets
Use a graphing calculator to solve the equation. Round to two decimal places.(1.06)x = 6
A. 0.03 B. 1.73 C. 34.2 D. 30.75
Perform the division.
A. x4 - 1 B. x4 + 1 C. x4 + 12x - 1 D. x4
Solve the problem.John owns a hotdog stand. He has found that his profit is represented by the equation 
with P being profits and x the number of hotdogs sold. How many hotdogs must he sell to earn the most profit?
A. 32 hotdogs B. 31 hotdogs C. 44 hotdogs D. 22 hotdogs