Let \[f\,\left( 1 \right)=-\,2\] and \[f'(x)\ge 4.2\] for \[1\le x\le 6\]. The smallest possible value of f(6) is

Let \[f\,\left( 1 \right)=-\,2\] and \[f'(x)\ge 4.2\] for \[1\le x\le

1.	Let \[f\,\left( 1 \right)=-\,2\] and \[f'(x)\ge 4.2\] for \[1\le x\le 6\]. The smallest possible value of f(6) is
A.	9
B.	12
C.	15
D.	19
Answer» E.

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Let \[f\,\left( 1 \right)=-\,2\] and \[f'(x)\ge 4.2\] for \[1\le x\le 6\]. The smallest possible value of f(6) is

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