What is the answer to this

The water has been on the stove y=9.5x+62.1 after how many minutes will the tempature be 138.1 f

Three times the sum of a number and seven is negative thirty-six. what is the number?

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