3. Perform the mathematical operation indicated. Make sure that you express each answer in the appropriate number of significant figures/decimal places. (3 pts. each) a) (2.313 x 391 x 3.200) x 576 = b) (0.00028) (4.022 x 104) = 9.03 x 102 c) (2.00 x 10^) (1.90 x 103) = (0.044) (5.00 x102) d) 123 + 33.0033 + (4.8 x 10-1) - (8.400 x 10) = e) (9.8 x 102) + 654.32 + 1.113 -0.2559 = f) (5.004 x 10) (-4.354 x 10) = (5.89 x 10^) (6.20 x 10) g) 44.79 -5.6 -0.0045 = h) (2.54 - 1.98) = 2.54