Determine the upper and lower bounds on the zeros of the given function.f(x) = 6x3 - 7x2 + 7x + 9
A. upper bound: 1; lower bound: -1
B. upper bound: 2; lower bound: -3
C. upper bound: 2; lower bound: -1
D. upper bound: 2; lower bound: -2
Answer: C
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