Answer:
8.97 x 10^6
Explanation:
To add in scientific notation, the exponents need to be the same for the bases of 10. You can either make them both to the exponent of 6 or 5. It does not matter. I made them both to the power of 5
(8.6 x10^6 ) + (3.7 x10^5 )
(86 x 10^5) + (3.7x10^5)
(86 x 3.7) x 10^5
89.7 x 10^5 Rewrite in scientific notation
8.97 x 10^6