Question: Let a = [1, -3, 5], b = [4, 0, 8], c = [-2, 9, 1]. Find: (-3a + 5c) b, 15(a - c)

Let a = [1, -3, 5], b = [4, 0, 8], c = [-2, 9, 1].
Find:

(-3a + 5c) • b, 15(a - c) • b

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