Answer:
6.984 x 10^10
Explanation:
(7.2 x 10^3) x (9.7 x 10^6)
7.2 x 9.7 = 69.84
3+6=9
69.84 x 10^9
The first number has to be between 1 and 10 and it can't be a 0. So you move it to the left and add 1 to the exponent.
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