Solve the inequality. Express your answer using interval notation.7 ? 
x + 2 < 27
A. (2, 3]
B. [2, 3)
C. (2, 10]
D. [2, 10)
Answer: D
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Find a formula for the nth term of the sequence.0, 2, 0, 2, 0 (alternating 0's and 2's)
A. an = 1 + (-1)n+1 B. an = 1 - (-1)n C. an = 1 + (-1)n D. an = 1 + (-1)n-1
Solve the problem.Suppose that certain bacteria can double their size and divide every 30 minutes. Write a recursive sequence that describes this growth where each value of n represents a 30-minute interval. Let a1 = 426 represent the initial number of bacteria present.
A. a1 = 426; an = 
an-1 for n > 1.
B. a1 = 426; an = 2 an-1 for n > 1.
C. an = 2 a1 for all values of n.
D. a1 = 426; an = 2 an+1 for n > 1.
Solve the problem.A saleswoman packed 3 jackets and 6 skirts. With one jacket, she could wear all 6 skirts. With another jacket, she could wear 5 skirts. With the other jacket, she could wear only 3 skirts. How many different combinations did she have?
A. 14 B. 13 C. 33 D. 90
Perform the indicated elementary row operations in the stated order.
; 
A. 
B. 
C. 
D. 