Question: Carry out the following operations, and express the answer with the appropriate number of significant figures. (a) 320.5 - (6104.5 / 2.3) (b) [(285.3

Carry out the following operations, and express the answer with the appropriate number of significant figures.
(a) 320.5 - (6104.5 / 2.3)
(b) [(285.3 × 105) - (1.200 × 103)] × 2.8954
(c) (0.0045 × 20,000.0) + (2813 × 12)
(d) 863 × [1255 - (3.45 × 108)]

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