Write the first four terms of the sequence.an = 4n
A. a1 = 1, a2 = 16, a3 = 81, a4 = 256
B. a1 = 1, a2 = 4, a3 = 16, a4 = 64
C. a1 = 4, a2 = 16, a3 = 64, a4 = 256
D. a1 = 16, a2 = 64, a3 = 256, a4 = 1024
Answer: C
Mathematics
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Solve the given equation for the indicated variable.S = 2?rh + 2?r2 for h
A. h = 
- 1
B. h = 2?(S - r)
C. h = 
D. h = S - r
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Find the product.(9y + x)(9y - x)
A. 81y2 - 18xy - x2 B. 81y2 - x2 C. 81y2 + 18xy - x2 D. 18y2 - x2
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Find the area of the geometric figure.
A. 167 sq yd B. 53 sq yd C. 171 sq yd D. 179 sq yd
Mathematics