The coordinates of points P, Q and R are P(1,3,5),Q(4,12,20) and (3,9,15).Show that the three points are collinear.
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i think there was a typo. you wrote pat brings 3 quarts of ice-cream to the party. each serving of ice-cream is 1 6 quart. how many total servings of ice-cream does pat bring to the party? i think the bold is supposed to be 1/6. so 1 quart of ice cream = 6 servings. 6 * 3 = 18.