Will someone pls help asap

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.

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12

98 point question what is the record for most points in one