Answer:
4.9 x 10^9 = 4,900,000,000
3.2 x 10^-5 = 0.000032
Step-by-step explanation:
4.9 x 10^9 = 4,900,000,000: note the 9 places after the 4.
10^9 = 1,000,000,000; after substituting,
4.9 x 1,000,000,000 = 4,900,000,000
10^-5 = 0.00001
3.2 x 0.00001 = 0.000032
