Answer:
The boy band sold 1.89 ×10^6 copies
Step-by-step explanation:
To get the number of copies we must add 5.9×10^5 copies with 1.3×10^6 copies. We can´t add them like that.
To make the addition we have to adjust the power of 10, so they have the same index
In this case we can change 5.9×10^5 to 0.59×10^6 ( we move the comma to the left , and we add 1 power to the scientific quotation.
So, 0.59×10^6
+ 1.3×10^6
1.89 ×10^6
