Find the nth term and the indicated term of the arithmetic sequence whose initial term, a, and common difference, d, are given.a = 76; d = -8an = ?; a9 = ?
A. an = 76 - 8n; a9 = -20
B. an = 84 - 8n; a9 = -20
C. an = 76 - 8n; a9 = 12
D. an = 84 - 8n; a9 = 12
Answer: D
Mathematics
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? 
A. - 
B. -12
C. 12
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Determine which value(s), if any, must be excluded from the domain of the variable in the expression.
A. x = 0, x = - 
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Mathematics