Can someone explain why everytime it rounds up to the thousands it doesnt keep the 4th number, it looks like it goes up by one, please answer an actually answer or get reported

Which statements are true? see picture

Aflute is on sale for 20% off. including the discount and 8% tax, the sales price is $216.

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655