Tristan walked for 13 1/4 hours in may and june altogether. in may, he walked 6 4/6 hours. how many hours did he walk in june?

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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

Kayaks rent for $35 per day. which expression can you use to find the cost in dollars of renting 3 kayaks for a day?