Perform the indicated operation. Simplify, if possible.
+ 
A. 
B. 
C. 
D. 
Answer: D
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Find the probability of the event if a single choice is made from a bag.A bag contains 6 red marbles, 2 blue marbles, 4 yellow marbles, and 6 green marbles. What is the probability of choosing a red marble when one marble is drawn?
A. 
B. 
C. 
D. 
Write a formula for the general term, or nth term, for the given sequence.1 ? 6, 2 ? 7, 3 ? 8, 4 ? 9, 5 ? 10, . . .
A. an = n(n + 6) B. an = n(n + 5) C. an = n + 5n D. an = n(n - 5)
Convert the rectangular equation to a polar equation that expresses r in terms of ?.x = 4
A. r = 
B. r = 4
C. r = 
D. cos ? = 4
Solve the problem.A theater has 22 rows with 25 seats in the first row, 28 in the second row, 31 in the third row, and so forth. How many seats are in the theater?
A. 2552 seats B. 1276 seats C. 1243 seats D. 2486 seats