What is the product of 4x+7x

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How much work would be needed to raise the payload from the surface of the moon (i.e., x = r) to an altitude of 5r miles above the surface of the moon (i.e., x = 6r)?

Aforce of 240.0 n causes an object to accelerate at 3.2 m/s2. what is the mass of the object?