I need help i dont get it

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5

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

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?