Answer all of these questions correctly will give brainliest. also please show work, or else, im not giving brainliest. dumb answers are going to be removed and reported.

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.

Can someone check if i did this correct. it’s number 4 if you’re wondering.

Write the pair of fractions as a pair of fractions with a common denominator