# Math Expoents

One microgram is equal to 1x10^-6 gram. If the mass of a substance is 8x10^9 micrograms, what is its mass in grams?
a) 1.25x10^-15
b) 1.25x10^-3
c) 8x10^3
d) 8x10^15

1. 👍 1
2. 👎 0
3. 👁 930
1. 8x10^9 * 1x10^-6 = 8x10^3

1. 👍 3
2. 👎 0

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