A bag contains 3 white balls, 4 green balls and 5 red balls. 3 balls are drawn from the bag without replacement. Use a tree diagram to find the probability that the balls are white colors.

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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.

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take