I need some help!?!?!?!?!?

Factor the expression. 4d + 12 __ (d +

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.

Solve the equation x/4 - 5= -8 -27 -12 -7 12