(a) Perform the indicated operation. Express your answer in scientific notation. Part a: (4.7×105)(2.9×104).(4.7\times 10^5)(2.9\times 10^4).(4.7×10 5 )(2.9×10 4 ). 487.5×103 (b) Part b: 5.8×1032×108\frac{5.8\times 10^3}{2\times 10^8} 2×10 8 5.8×10 3 (c) Part c: (1.5×103)+2491(1.5\times 10^3)+2491(1.5×10 3 )+2491 (d) Part d: 0.0005−1.5×10−40.0005−1.5\times 10^{-4}0.0005−1.5×10 −4
