Find a formula for the nth term of the sequence.0, 2, 2, 2, 0, 2, 2, 2 (0, 2, 2, 2 repeated)
A. an = 1 + (-1)(n+1)(n + 2)/2
B. an = 1 + (-1)n(n+1)/2
C. an = 1 + (-1)n(n-1)/2
D. an = 1 + (-1)n(n+1)(n+2)/6
Answer: D
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Solve the system by elimination. If the system is inconsistent or dependent, say so. 7x - 9y = 5-21x + 27y = -20
A. 
B. (3, 4)
C. infinite number of solutions of the equation 7x - 9y = 5; dependent system
D. empty set solution; inconsistent system
Solve the problem.A dome in the shape of a spherical segment has a volume of exactly 2,000,000 ft3. If the radius of the dome is 
what is its height? (The volume of a spherical segment is given by 
.)
A. 35.569 ft B. 31.569 ft C. 35.168 ft D. 31.570 ft
Solve the system of equations by the addition method.
A. (4, 0) B. (0, -4) C. (-4, 0) D. (0, 4)
Graph the set on a number line.[1, 6]
A. 
B. 
C. 
D. 