5 and 15 are the first two terms in a geometric sequence. What is the arithmetic difference between the 11th term and the 13th term?
A. 3*5^2
B. 5* 3^13 - 5 * 3^11
C. 5^13
D. 40 * 3^10
E. 3^12 - 3^10
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A. 3*5^2
B. 5* 3^13 - 5 * 3^11
C. 5^13
D. 40 * 3^10
E. 3^12 - 3^10
[Reveal] Spoiler:
Question regarding arithmetic difference is a - b / 2? or only a - b?
