Find the difference between –3 and12: 12- (-3) = 15.  Divide by 3 to find out what 1/3 of the distance is: 15/ 3 = 5.  Multiply 5 by 2 to get 2/3: 5 * 2 = 10.  Now add that value to
–3 to get point P: -3 + 10 = 7.  (D)

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