which answer choice describes f(x)= -3x^2+7x-2 accurately
A: opens up and has a maximum value
B: opens down and has a minimum value
C: opens up and has a minimum value
D: opens down and has a maximum value
which answer choice describes f(x)= -3x^2+7x-2 accurately A: opens up and has a maximum value B: opens down and has a mi
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