To cook fondant, sugar and water are heated to 230°F. Then the mixture is cooled at room temperature before it is kneaded. If the cooked fondant cools to 200°F in 15 minutes in a 68°F kitchen, how long will it take to cool to 100°F? (Hint: Find the constant k first.)​

Jabari is power washing houses for a summer job. for every job, he charges an initial fee plus $30 for each hour of work. his total fee for a 4 -hour job, for instance, is $170 . jabari's total fee,f, for a single job is a function of the number,t, of hours it takes him to complete the job. write the function's formula.