Question

Calculate (7.15 x 10^9) - (4.56 x 10^8).

2.59 x 10^1
2.59 x 10^9
6.694 x 10^8
6.694 x 10^9

Answer 1

D. 6.694 * 10^9

Explanation:

The exponent is 9 because the result of the first equation had 9 digits. It is positive because the decimal moves to the right.