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.8, 2 , -4, -10, . . .
A. an = 8 - 6n; a20 = -112
B. an = 6n - 14; a20 = 106
C. an = 14 - 6n; a20 = -106
D. an = 6n - 8; a20 = 112
Answer: C
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A. One real solution B. Two different real-number solutions C. Two different imaginary-number solutions
Find the exact value of the expression.cot (-315°)
A. 
B. 
C. 1
D. -1
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A. No B. Yes
Factor the polynomial completely. If the polynomial is prime, so state.x2 + 3x - 40
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