I can't figure t his out help would be appreciated.

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

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.

The functions below show the amount of money bella and sweet t had saved after earning money for doing chores. which description best compares the two functions?