The linear density of a rod of length 4 m is given by p(x) = 9 + 2V measured in kilograms per meter, where x is measured in meters from one end of the rod. What is the total mass of the rod? 140 32 kg. 3 kg. Option 2 Option 1 40 kg. 36 kg. O Option 3 O Option 4 3.

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