The hundred thousands place is the 2. Since the place below that is 0, it rounds down.
200,000
0.24 is the answer to this question
There are total 17bills of $20 dollars and 6 for $10 bills.
We get the answer of $20 bills by dividing 340 and 20 then we get 17 then subtract the value from total bills than you get 6 bills for $10 dollars
If the question is asking for expansion, the answer would be 20z^2-20Z