Find an equation of variation for the given situation. s varies directly as the square of t, and s = 175 when t = 5.
A. s = 
t2
B. s = 
t2
C. s = 7t2
D. s = 35t2
Answer: C
Mathematics
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8
A. 
B. - 
C. 
D. 
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Use Cramer's rule to solve the system. 9x + 7z = 117-4x + 9y + 9z = 84 6x - 7y = 15
A. {(6, 3, 9)} B. {(7, 1, 9)} C. {(3, 9, 3)} D. {(6, -3, -9)}
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