4x^{2}-16x-15=3x^{2}-244x 2
−16x−15=3x
2
−24 round to the nearest 10th decimal point use quadraric formula

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.