A geometric sequence is given. Find the common ratio and write out the first four terms.{dn} = 
A. r = 2; d1 = 
, d2 = 
, d3 = 
, d4 = 
B. r = 2; d1 = 
, d2 = 
, d3 = 
, d4 = 
C. r = 
; d1 = 
, d2 = 
, d3 = 
, d4 = 
D. r = 
; d1 = 
, d2 = 
, d3 = 
, d4 = 
Answer: A
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A. 8 B. 16 C. 15 D. 7
Add or subtract. Assume all variables represent positive real numbers.3 
+ 4xy 
A. 11 xy3
B. 11x2y3
C. 7xy4
D. 7x2y4
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A. 50 mph B. 80 mph C. 40 mph D. 20 mph
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