Write the first four terms of the sequence defined by the recursion formula.a1 = 3 and an = an-1 - 3 for n ? 2
A. 3, 6 , 9 , 12
B. 3, 2 , -1 , -4
C. 3, 0, -3, -6
D. -3, -6, -9, -12
Answer: C
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Find the probability.The table shows the political affiliation of voters in a small midwestern town and their positions on stronger drug control laws. ?Stronger Drug Control 
Find the probability that a Democrat opposes stronger drug control laws.
A. 0.490 B. 0.420 C. 0.350 D. 0.390
Which scenario below should be counted using permutations?
a. The number of ways the gold, silver, and bronze medal winners can be chosen in an Olympic track-and-field event (assume that there are no ties) b. The number of ways 3 people can be chosen to sit from among 8 people c. The number of ways to choose 5 lottery numbers d. The number of ways to roll a total of 7 when rolling a pair of dice
Solve the absolute value inequality. Other than ?, use interval notation to express the solution set and graph the solution set on a number line.|x - 2| ? 0
A. (-?, ?)
B. (-2, 2)
C. {2}
D. (2, ?)
Solve the problem.Suppose a tank contains 100 gallons of a solution of 10 lb of salt dissolved in water, which is kept uniform by stirring. If pure water is allowed to flow into the tank at a rate of 3 gallons per minute, and the mixture flows out at a rate of 2 gallons per minute, find an expression for the amount of salt in the tank after t minutes.
A. y = 100 (t - 100)2
B. y = 
C. y = 
D. y = 