Write a formula for the general term (the nth term) of the arithmetic sequence. Then use the formula for an to find a20, the 20th term of the sequence.an = an-1 + 10, a1 = 18

A. an = 8n + 10, a20 = 170
B. an = 10n + 8, a20 = 208
C. an = 18n - 8, a20 = 352
D. an = 10n + 28, a20 = 228


Answer: B

Mathematics

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