_ Years will be spent on working and _ years will be spent on eating food I provided a picture to the full question!

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.

True or false look at the picture pls : /

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?