Let \[f\] be a function which is continuous and differentiable for all real x. If \[f(2)=-4\] and \[f'(x)\ge 6\] for all \[x\text{ }\in [2,\text{ }4],\] then

Let \[f\] be a function which is continuous and differentiable for all

1.	Let \[f\] be a function which is continuous and differentiable for all real x. If \[f(2)=-4\] and \[f'(x)\ge 6\] for all \[x\text{ }\in [2,\text{ }4],\] then
A.	\[f(4)<8\]
B.	\[f(4)\ge 8\]
C.	\[f(4)\ge 12\]
D.	None of these
Answer» C. \[f(4)\ge 12\]

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Let \[f\] be a function which is continuous and differentiable for all real x. If \[f(2)=-4\] and \[f'(x)\ge 6\] for all \[x\text{ }\in [2,\text{ }4],\] then

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