Please help me... I'm confused

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

Iwill give you ! what is the measure of ∠v ?

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