Approximately how many times greater os 6x10-5 then 5x10-9?

Trigonometry help asap

Which expression is equivalent to the expression shown?

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.