Find an expression for the nth term of the arithmetic sequence. 6.3, 7, 7.7, 8.4, 9.1, . . .
A. an = 0.6n + 5.6
B. an = 0.7n + 5.4
C. an = 0.7n + 6.3
D. an = 0.7n + 5.6
Answer: D
Mathematics
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A. 
B. 
C. 
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, find:
?f/?y
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Use the product-to-sum formulas to rewrite the expression as the sum or difference of two functions.sin 3? sin 5?
A. - 
cos 2? - 
cos 8?
B. 
cos 2? - 
cos 8?
C. 
cos 8? - 
sin 2?
D. sin2 15?2
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Collect like terms.6c2d2 + 2c2d3 - c2d2 - 5c3d2 - 5c2d3
A. 5c2d2 - 3c2d3 - 5c3d2 B. 5c4d4 - 3c4d6 - 5c3d2 C. 7c2d2 - 10c3d2 D. 5c2d2 - 8c2d3
Mathematics